Hi,
- It’s seems that you have 2 unofficial modules for Cart (fmm and ets) -> do you know why ? If not maybe this is the reason.
- Do you have the module « ps_shoppingcart » ? Is it the last version ? If not did you tried to reset it ?
https://github.com/PrestaShop/ps_shoppingcart
- problem Looks like coming from group privileges ? Did you check how privileges are working on prestashop (visitor, guest, customer … ) ?
- So go to your customer settings of your prestashop and have a look about which module is authorized. If your modules (fmm, ets, shoppingcart are not activated for customer groups, this is the reason!
Regards,