Developer Product sale not working in game

I have a few developer products in my game. I buy these in the studio and they were perfectly as intended and give the player a item and the purchase works perfectly. In the game the developer product purchase occurs but nothing happens and it just wastes your robux.
My code is very standard.
Any ideas why this occurs?

I think this probably belongs in #help-and-feedback:scripting-support
What’s the product? Is it something like coins?
Might also be because of something that only works in studio. Try buying the developer product in game and see what happens.