[c0nsumer]

That's the problem... I've signed into my server directly (local URL) and it's still not happening. I sign in successfully, my server is listed in the left pane, but when clicking it I'm informed I don't have access. I can't even get into its settings.

[selykg]

Weird. I'm on a Mac, so this might be different for whatever platform you're running it on. But I click the Plex server icon in the menu bar, "Open Plex" which just takes you to the admin screen. It was "configured" but not signed in. So, I clicked the user bubble in the upper right, then Sign In at the bottom. This took me to the usual sign in page, which errored the first time, but succeeded the second time.

Not sure if that helps you, but hopefully it's a temporary issue for you.

[c0nsumer]

Okay, here's how friggin' ridiculous this is... I got this from a coworker...

I access Plex normally via an internal hostname. For the life of me I couldn't see any settings and sign-in would basically loop. Coworker tells me he's been fighting with it as well and it for worked once he used an IP instead of hostname. I do the same and bam, I can reclaim my server.

Sheesh.

(Note, I have Plex running on a Synology NAS, so no desktop icon.)

[selykg]

Geez...

How do you like running it on a NAS? I'm considering a Synology in the future to run mine off of. Right now it's all just an external drive on my Mac mini. It works okay but the Mac is now 8 years old so it's uh... showing it's age.