Plex remote access working fine for years but now drops out after 10 seconds or so

There’s tons of stuff that can impact your remote access setup without you doing/seeing any change.
For any actual troubleshooting you’ll need to dig a bit deeper (or share the respective details).

As a side note: the remote access status indicator will always default to :green_circle:… also while it’s still testing the status. So you should consider your remote access isn’t working at all at the moment!