I still see 126 channels of DirecTV source on iPad app, while on server I see 167. From server channels like CSpan works but from iPAD I got "tuner not available" error. Maybe on iPad there are old credentials stored?
The iPad doesn’t store credentials at all I don’t believe. Have you tried for quitting the app on the iPad to see if that helps? Rebooting the iPad would have the same effect. Worth trying if you haven’t already.