Mariaantoaneta13222222

I try to open the app and the screen goes blank… i have to close it and re-open again. This happens EVERY time i go to use it. I also can’t hear the chord examples. I have tried everything, taking my phone off mute, putting my earphones in, turning the volume to the max. None of that works. At first i thought it was because of my phone, but no. Please consider fixing