REDIRECT issue for a module in Prestashop 1.7

Experience an issue with a payment module and cart for our multistore prestashop - where we click the cart (or go directly to the module's checkout page) it says error for redirect "TOO MANY REDIRECTS". And there shouldn't be, so it is weird.

We have tried to solve this this whole day and can't get it to work.

Have in mind that we have some overrides for controllers and prettyurl module that needs to be delicate with (and not change things without letting us know).

You must have a lot of experience with prestashop 1.7 and modules, also be able to work and solve this before saturday (friday).