This didn’t start happening until just recently.
The forum has been set to log out after 7 days for years. There have been a few updates recently but not every day. I don’t see anything odd about your account. If you are already signed into web app either locally or app.plex.tv or the main website it should just log you automatically into forums.
For over a year I’ve had a browser tab open to the Forums every time the browser is open (which is almost always). Ditto for the Plex web app (via app.plex.tv). All this time the Forum connection has never logged out automatically. But recently (in the last week), I’ll check it in the morning and it’s always logged out. AFAIK, it’s never automatically logged out after 7 days (though I can’t be certain that I’ve never restarted the browser in that period of time).
It’s a minor annoyance to have to re-login every day, but it would be great if the behavior could go back to the way it was.
is the web app remaining signed in?
Yes, it is.
A bit more info, in case it helps. When I come back after getting logged out sometime during the night, the URL is “https://forums.plex.tv/new” and the page shows “Oops! That page doesn’t exist or is private.” (which makes sense since I’m logged out). Happens every day.
Hasn’t happened in the last several days, so hopefully no longer an issue.