Now, I got the same problem.
If I set Fully tout refresh automatically after a few minutes, I see login attempt failed on HA.
And having removed the auto refresh the page is not connected anymore ans it doesn’t work.
Coule someone tell us what are the right parameters for having a tablet always active but with the screen getting dark for battery saving. I also have a problem now because the battery level is not sent anymore (i guess because it crash) and I use it for charging the tablet…
Thank you all