This is the opposite, fixing payment flow is something can be completely done without customer feedback. It’s q&a work. You would want to test the response of

This is the opposite, fixing payment flow is something can be completely done without customer feedback. It’s q&a work. You would want to test the response of customers on your product as well as your acquisition strategy, this is something you can’t fully predict, but still can get close if you spend a lot of time in that market