Android apps ← Knowledge Base "Couldn't install on USB storage or SD card" Android error code "491"or "963" or "403" or "-24" Android error message / code How to restore subscription in Tab Pro app on Android Cancel subscription in Tab Pro android app I want a refund for Android app How do I register an Ultimate Guitar account in Android apps? I purchased the app. How do I install it on my other Android device? How can I access tabs offline? How to enable "realistic sounds" in Tab Pro?