Problem/ bug

Hello, I installed this plugin yesterday, it works very good, except for one problem – when a customer chooses his free gift and adds it to the items list, it cannot be deleted in MOBILE view. So if the customer wants to delete free-gift-1 and then add free-gift-2 he cannot do it on MOBILE. On desktop and laptop this action is possible because there is a small cross x on the left-side of the free gift, and when customer clicks on the cross the free item can be deleted and another free item can be added. This action is not possible on mobile.
Please can you repair this bug? Thanks!