Hello,
First time I had a closer look in your backend, I noticed that you use a LOT of override views...
Right now, we have together a lot of points, override views remains.
So, can you test them if the roots of all your issues aren't coming from these?
For be precise, if someone created these override for you
:
An override is a way to custom several pages, this kind of modification required good code acknowledge to don't "break" your shop.
Now, to desactivate an override, go to Views configuration page, in Components => HikaShop => Configuration, and in Display dropdown click on Views.
You will see a lot Views to find an override you will see under Remove customization an trash icon, click on it to delete an override.
Caution : By clicking on trash icon you will delete your override definitively !
So, save your website to keep ALL your file, and don't delete useful override OR open an editor (like NotePad) to keep
aside your code.
And only after Remove customization ONE by ONE and each time process some test to get the override that leads to your
issue.
Hope this will help!
Regards,