"Linking Store in progress", PrestaShop Checkout does not link PayPal

[DisplayNameRequired]

Hello,

I have a fresh install of PrestaShop 9.0.0. Everything is working fine (at least demo) but I cannot configure/connect my PayPal account. If I click on "Link Store" from Marketplace - endless spinning of "Linking Store in progress" and nothing happens. But I was able to link my store through the Module Manager: PrestaShop Checkout shows button "Configure", then it opens next page and shows green checkbox next to "Link your store to a PrestaShop account". And that is the only thing I can do with this module. Next step (PayPal) isn't available.

Please help.

[DisplayNameRequired]

To anyone who face that issue - check your php.ini: curl.cainfo must have the valid chained certificate from https://curl.se/docs/caextract.html. I updated it to the latest and after that I was able to successfully connect PayPal and open Themes Catalog.

Here is my /etc/php.ini:

[curl]
; A default value for the CURLOPT_CAINFO option. This is required to be an
; absolute path.
curl.cainfo = /etc/ssl/certs/cacert-2025-08-12.pem

 

Edited August 15 by DisplayNameRequired (see edit history)