Been using ATV with Zwift for 5 years (3 different ATVs) - no problems with logins. But about a 6 weeks ago it started - every time I open zwift it asks me to log in. On top of that it also forgets some of my settings. Like power graph on the bottom of the screen AND trainer difficulty settings - I ride on hardest, but every freaking time I open it is back to default middle state.
You might try reinstalling Zwift on your ATV, perhaps even with another iOS device close by. IIRC, there is sometimes a window that pops up during installation asking for some sort of permission. And if you miss the window, or donât âallowâ whatever it wants, then I think you may get the behavior you are describing.
Perhaps hard to correct because itâs not consistent or widespread. In the 5 years I have been using Zwift on ATV I think this has happened to me 2 or 3 times, always during the first use following an update.