Products removed from cart at checkout
If you are buying products that require credits, and you do not have any credits in your account, then you must first buy a membership plan with credits, or if you're an existing member, then you can buy a credit bundle to add more credits.
Credit and Dollar items can't be purchased at the same time, the system will temporarily remove items from the cart until your credit items have been purchased. Once the purchase is complete, then your product with the credits will appear back in your cart.