Checkout page fields are not saving—unable to complete checkout

[L C]

Unable to progress through checkout process because fields don't save (will enter info then click continue to next step and all data is erased).

Cleared the cache. Reloaded browser pages. Tried on three different computers. Uninstalled and reinstalled PS Checkout module. No JS errors (or other) in console.

Running PrestaShop v. 9.0.0 with Classic template.

[L C]

Also discovered that the native PS Cash on delivery (COD) module payment option doesn't show under payment options when PS Checkout is enabled; when disabled, COD shows.

Edited October 27 by L C (see edit history)

[El Patron]

9.0.0 is beta, not sure why PS released and pushed for it's usage.  

you can try this, disable prestashop checkout and see if you have same issue.

if you are not to far along with your shop build consider 9.0.1, I do not  know if upgrade is working totally for 9.0.0 to 9.0.1.

9.0.1 has a lot of fixes discovered from 9.0.0 beta.

here is guide on debug that might help

https://prestaheroes.com/blogs/prestashop-alerts/how-to-enable-prestashop-debug-mode-v8-v9

[L C]

--El Patron

Thanks A LOT for your response. Yes, I'm weeks into it.

Quite a changelog! Will give it a try.

Any major issues you experienced?

LC

[Nickz]

Why would you follow through with a update into a unproven PS version? 
Presta likes to use its community to point out their child deseases.   

[L C]

5 hours ago, Nickz said:

Why would you follow through with a update into a unproven PS version? 
Presta likes to use its community to point out their child deseases.   

--Nickz

Thanks for getting back. The reason is because the Checkout page is non-functional. I have spent literally a day and night trying to get this working, and at this point I don't see any other option.

[L C]

--El Patron

True—when I began building the store, the app was not presented as a beta build.

[El Patron]

37 minutes ago, L C said:

--El Patron

True—when I began building the store, the app was not presented as a beta build.

I tried to be helpful back in June...

https://prestaheroes.com/blogs/prestashop-alerts/prestashop-9-what-s-new-why-to-wait-and-how-to-prepare-for-the-upgrade

message me with your email address and front office shop link, I can take a look..

tip:  moving forward with ps, you should develop a relationship with a dev through job opening or someone on the board you respect, not me, I'm not offering to paid work, I'm expensive but know the situation you are in...and on these types of issues it's difficult to 'guess' what you should do/learn.

 

el

[L C]

--El Patron

Thank you for your offer.

Messaged the links. There are still some browser and mobile kinks to work out (fine on Safari), but the Checkout page—as described at the beginning of this post—gets stuck.

Any insights would be greatly appreciated. Thanks!

[L C]

--El Patron

Spent the whole night trying to update—both auto and local archive. I deactivated non-native modules, regenerated email templates, and disabled all overrides.

Here are the consistent error messages I am getting:

It seems there was an issue with the server. This type of error usually happens when: The server is temporarily unavailable. There's a misconfiguration or unexpected problem on the server.

HTTP request failed. Type: ERR_BAD_RESPONSE - HTTP Code: 500

I worked with my hosting provider. They said things are all good on their end and that it is not a server issue.

Ideas? Thanks.

 

 

[L C]

Found the right combo (for me):
1. Must be Local Archive update.
2. Do not disable disable all overrides in Update Assistant.
3. psshipping must be removed from the /modules folder (from a rogue post).
4. The PrestaShop Shipping module has to be uninstalled in the Module Manager.
5. apiplatform has to be removed from the admin123/bundles folder.

Site is functional, though we are still back to resolving the Checkout page issues noted at the top of this post.

[L C]

--El Patron

BTW, I did disable the PrestaShop Checkout module—no change.

[El Patron]

6 hours ago, L C said:

Found the right combo (for me):
1. Must be Local Archive update.
2. Do not disable disable all overrides in Update Assistant.
3. psshipping must be removed from the /modules folder (from a rogue post).
4. The PrestaShop Shipping module has to be uninstalled in the Module Manager.
5. apiplatform has to be removed from the admin123/bundles folder.

Site is functional, though we are still back to resolving the Checkout page issues noted at the top of this post.

 

6 hours ago, L C said:

--El Patron

BTW, I did disable the PrestaShop Checkout module—no change.

from private message I bring into public domain, no where did I say disable it, there should be an upgrade available (also see if upgrade notice in module manager). 

I see several issues, 1) add to cart can fail, I had same issue with 9.0.0 and jumped to 9.0.1, this for client upgrade  2) prestashop checkout has always been an issue, there is update to this make sure you have it

https://addons.prestashop.com/en/payment-card-wallet/46347-prestashop-checkout-built-with-paypal-.htm

alternative, based on your payment options (what are they?), is to uninstall prestashop checkout, use native ps checkout and install payment modules, for example paypal and stripe.  to be honest over the years I've invoiced thousands of dollars to new client intake with checkout issues, removing ph checkout or other 3rd party checkout always solved.

///

what I did not say in private but probably up above, there are major issues fixed in 9.0.1...I suspect there will be another release 'very' soon to solve some other major issues.

1)  create a subdomain and create a staging copy of your current shop 2) back staging copy up 3) try to upgrade to 9.0.1 using prestashop upgrade module.

this is your best option...tip: also when you search for issue you are having frame it 'prestashop github (describe your issue), you will not be first person to have it and mosT often you will find issue already reported in github.  The forum is good place to have someone hold your hand but ps devs do not monitor or participate here.

 

 

[L C]

--El Patron

Thanks for your suggestions.

I removed PrestaShop checkout.

For payment methods, I want to have: PayPal, Venmo, credit cards, Apple Pay, Google Pay, and COD. Zelle would be a welcome add-on, but there doesn't appear to be an option available.

I downloaded and installed the PayPal add-on. Not many choices and I am unable to have a credit card option in the Checkout window, which I want. There also appears to be a default 'buy now, pay later option' showing up that I don't want and can't get rid off.

Checkout page transitioning between steps is still functioning horribly.

Edited October 29 by L C (see edit history)

[El Patron]

10 hours ago, L C said:

--El Patron

Thanks for your suggestions.

I removed PrestaShop checkout.

For payment methods, I want to have: PayPal, Venmo, credit cards, Apple Pay, Google Pay, and COD. Zelle would be a welcome add-on, but there doesn't appear to be an option available.

I downloaded and installed the PayPal add-on. Not many choices and I am unable to have a credit card option in the Checkout window, which I want. There also appears to be a default 'buy now, pay later option' showing up that I don't want and can't get rid off.

Checkout page transitioning between steps is still functioning horribly.

I'm sorry to keep beating this drum, but 9.0.0 is not going to work for 'anyone', I still have the add to cart issue, when I tested checkout same issue, won't hold inputted data.  Look you don't have large number of products, you should abandon 9.0.0 and either go to 9.0.1 or better yet 8.2.3.  I'm sorry this happened to you (shopify this be done and running in two days).  9.0.0 is kaput, should never have been released as it was to world....I don't know what ps was thinking or if they were at all.

[Andindeford61]

Also ehrlich, wenn ich das so lese, klingt das nach einem typischen Session- oder Cookie-Problem. Irgendwas speichert die Daten halt nicht richtig, wahrscheinlich durch Domain-/HTTPS-Mismatch oder ein Modul, das dazwischenfunkt. Ich würde erstmal alles außer dem Standard deaktivieren und schauen, ob’s dann läuft. Wenn ja, nach und nach wieder einschalten, bis man den Übeltäter findet. Oft ist’s kein „großes“ Problem, nur so ein kleiner PrestaShop-Zickenstreich.

[L C]

--El Patron

Appreciate the feedback.

As mentioned in an earlier post, I was able to do the update. Or are you saying that I need to abandon this build and start over in 9.0.1?

BTW, does PrestaShop have a feature I am not aware of that would allow me to go in and globally change fonts and colors the way Translations allows the change of text copy?

MANY thanks.

[L C]

--Andindeford61

Appreciate your response.

When say disconnect everything, do you mean both custom docs (like a custom.css file I created or modified template I put into a child template) as well as all modules? Something else??

Thanks.

[El Patron]

2 hours ago, Andindeford61 said:

Honestly, reading this, it sounds like a typical session or cookie issue. Something isn't saving the data correctly, probably due to a domain/HTTPS mismatch or a module interfering. I'd start by disabling everything except the default settings and see if that fixes it. If so, re-enable them one by one until you find the culprit. Often it's not a major problem, just a minor PrestaShop glitch.

see github, there are major issues accepted on 9.0.1   when I had access to his front end, he can share here if he likes, console had lots of errors, I only was looking at prestashop  checkout continued disaster.  

1 hour ago, L C said:

--El Patron

Appreciate the feedback.

As mentioned in an earlier post, I was able to do the update. Or are you saying that I need to abandon this build and start over in 9.0.1?

BTW, does PrestaShop have a feature I am not aware of that would allow me to go in and globally change fonts and colors the way Translations allows the change of text copy?

MANY thanks.

no ps does not have this feature.  abandon ship or go to 8.2.3, you have not acknowledge yet the add to cart issue, I am testing a migration to 9.0.1, it has that issue which was also present in 9.0.0.  until there is a 9.1 stable ps9 should be  'avoided'....good luck, I'm jumping ship.

[L C]

--El Patron

Thanks for the update and answers.

Reevaluating and looking at all options.

[L C]

FYI. I created a new domain and performed a clean install of Prestashop (v. 9.0.0). Same problem. Updated to 9.0.1. No change.

Wiped everything clean and reinstalled. The Checkout page still doesn't function.

This is using the Classic PrestaShop template with no custom CSS or JS changes.

Also, I had a test site running that originated on v. 8 that worked fine. Updated to v.9. Still good. When I cloned it (using Softaculous), I encountered the same issue.

[El Patron]

On 11/4/2025 at 11:58 PM, L C said:

FYI. I created a new domain and performed a clean install of Prestashop (v. 9.0.0). Same problem. Updated to 9.0.1. No change.

Wiped everything clean and reinstalled. The Checkout page still doesn't function.

This is using the Classic PrestaShop template with no custom CSS or JS changes.

Also, I had a test site running that originated on v. 8 that worked fine. Updated to v.9. Still good. When I cloned it (using Softaculous), I encountered the same issue.

yes, 8.2.3 is way to go....this way you can start to build your product catalog, configure shipping payments and get to selling...really the only benefit for 9.0.0 was you could have existing email and still checkout out but in 9.0.1 they broke it loooooool....always wait for 'stable' version release like 9.1...it's not your fault is prestashop making the same bad decision and not only shooting themselves in the  foot but losing even more new users and destroying existing shops by luring them into upgrading current to ps9.  

[L C]

--El Patron

Thanks for the feedback. v.8 appears to be my only PrestaShop option. Unbelievable that an organization would release non-functioning software like this.

Before fully committing to this: Is v.8 reliable enough to consistently run a functioning store? Better to move to another option entirely if not.

[El Patron]

10 hours ago, L C said:

--El Patron

Thanks for the feedback. v.8 appears to be my only PrestaShop option. Unbelievable that an organization would release non-functioning software like this.

Before fully committing to this: Is v.8 reliable enough to consistently run a functioning store? Better to move to another option entirely if not.

yes, 8.2.3 is fine, it will be fine...once you have big beautiful shop don't upgrade for a very long time

[L C]

--El Patron

Thanks for the confirmation and overall support.

Will move ahead with v.8.

Be well.