Hi, is there someone succes setting cs cart multivendor with paymentwall, i download this addons from here https://marketplace.cs-cart.com/add-ons/integrations/paymentwall-payment-integration.html
and when i try to test pingback it always says order invalid.
what i do until now is, input the key and secret and try to test it
maybe is there someone can help me with this.
platfom user id i set to admin or 1
order_id i set to order_id
still order invalid.