Faceted Search only allows one filter at the same time and not work on brand pages

[TRESSET]

Good afternoon. I have two problems with the Faceted Search module. When I select one filter, the list of products is refreshed correctly, but when I select a 2nd filter does not refresh anything. Only 1 filter allowed at a time.

 

The other problem is that the module does not work on the brand pages. When I select an attribute to filter, the module disappears from view and refreshes the list with all the same products (unfiltered).

 

With debug mode enabled, there is no error.

 

Default template. Prestashop 1.7.1.1

 

Any possible solution?

 

Thank you very much!