Very bad a scam like app – Guitar Master - Tuner and Chords Toolkit Review

I have already bought the pro app , it stopped working suddenly so I delete it from the phone and re install it again trying to make it work , however it worked but the features that I already have purchased don't work any more, I tried to make re store but it failed and the owner want me to re buy the features again . What a bad deal, by the way this should be monitored by Apple Store team to deal with it , it's a crime
Review by Free violinist on Guitar Master - Tuner and Chords Toolkit.