Hello Bernd,
I have contacted AirTurn about this, as at least 6 users have contacted me having issues with their 500 series pedals. They don't seem to work on Windows or Android based on what I'm being told by users. Hopefully AirTurn will find a fix for whatever is going on. I'll certainly post any information I receive. They provide the best support for iOS as there are far more iOS users of sheet music apps than Android. So you can contact AirTurn about this to try to find a resolution, but you may have to return the pedal. MobileSheets will be coming to iOS soon, but I'm sure you'd like something that works on all operating systems. Other users have switched to PageFlip or Coda Music pedals and those worked immediately. I've updated the pedals page on my website to reflect this.
Mike
UPDATE:
I've been told that an update is coming next week to fix the issues users are seeing.
I have contacted AirTurn about this, as at least 6 users have contacted me having issues with their 500 series pedals. They don't seem to work on Windows or Android based on what I'm being told by users. Hopefully AirTurn will find a fix for whatever is going on. I'll certainly post any information I receive. They provide the best support for iOS as there are far more iOS users of sheet music apps than Android. So you can contact AirTurn about this to try to find a resolution, but you may have to return the pedal. MobileSheets will be coming to iOS soon, but I'm sure you'd like something that works on all operating systems. Other users have switched to PageFlip or Coda Music pedals and those worked immediately. I've updated the pedals page on my website to reflect this.
Mike
UPDATE:
I've been told that an update is coming next week to fix the issues users are seeing.