Just finished setting up 1.7.1.2 & now accounts, cart, & quick view won't work

[aimeejo]

I used prestashop in the past, I believe 1.5, and was happy with it, so while setting up a new shop decided to use Prestashop again.  I just got 1.7 up and ready to go live (on the Classic theme), and I just noticed that I have problems with the following, and I cannot figure out how to fix them:

 

1.  Quick view does not work when you click on a listing

 

2. When adding an item to the cart, nothing happens at all on the front end.  The cart icon stays grey and says that there are no items in the cart.  However, in the back end it shows that there are carts with items in them.

 

3.  If you click on anything to do with accounts (for example, sign in, my account, credit slips, etc), the page comes up blank.

 

4.  When modifying a listing on the backend, I get error messages that the product wasn't updated, if I try to preview the item, it opens a blank page with a running circle, and both pages continue to run until finally I get an error message "Link to database cannot be established: SQLSTATE[42000] [1203] User XXXXX already has more than 'max_user_connections".  I have to sign into my server and open up the Prestashop configuration files and close back out of them to remedy the problem.

 

I have tried clearing the cache, uninstalling and disabling modules, testing in and out of maintenance mode, tried different browsers, etc., and I cannot solve the problem.  All of the other pages seem to be working fine.

 

Anyone who can help me, I would appreciate it so much!