Cannot connect 3DR radios to Tower on Android

I don't know if it's a MP/AC version change or that I reinstalled the drivers (1.9) for the radios.

Are there certain settings the radio must have in order for Tower to work? It worked fine for months (Droidplanner 2 as well).

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  • Tower still works for me but Droidplanner2 and ardupilot for android stop working also for me.    I tried everything.

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