Does not work – Video Mixer to Combine Videos Review

So the free version was all fine and dandy and worked perfectly, but I decided to pay money for the feature that allows you to have more than two videos mixed and now it doesn’t work. Note: it’s been a year and This is a new phone and it still doesn’t work. The devs just took my money and ran with it I guess.
Review by LawRETRO on Video Mixer to Combine Videos.