HikaShop and J!Extensions GDPR module

-- HikaShop version -- : 5.0.3
-- Joomla version -- : 4.3.4
-- PHP version -- : 8.1
-- Browser(s) name and version -- : Opera GX/Google Chrome

Dear HikaShop,

We have a special case with our partner; they'd like to let users use the webshop even if all cookies are declined. The problem is, when we have the GDPR plugin enabled and all cookies declined and trying to put some items in the cart, chaning to the main page will give us a blank white page only.

We've contacted the GDPR plugin's support as well but we might missed some cookies or settings to set correctly and our question is: what kind of cookies are made when someone puts something in the cart, and what else is loading in the background that could cause problems like that?

We found that HikaShop's placing one cookie and one session file in the browser:
hikashop_cart_id
hikashop_cart_session_id

We tried to filter them out and test it but didn't work.

Are there any other cookies or it could be something else to cause this?

(Although we know that our partner's request is against the GDPR, but they take the risk anyway)

Thank you for your answer and help,
Have a Happy Easter!

Regards,
FRIK