Remote Access Stopped Working but showing as working?

Plex Media Server Remote Access
21

As far as I can discern, your server is reachable from the outside. I just tested it.
So if something is failing, it must be caused by something else.

Are we still talking explicitly about Plex clients outside of your home network?

If there is an issue accessing your server inside your home network, the most common issue nowadays is “DNS rebinding protection”, which is active in the DNS resolver.
For most users, the DNS resolver is sitting in their router – unless they use a second router or have added an appliance like Pi-hole to their network.
https://support.plex.tv/articles/206225077-how-to-use-secure-server-connections/

22

Yes it is both clients outside and inside our network that cannot access Plex. Only on the mobile app both inside and outside is working.

On the router interface (Asus) I have Google DNS setup, and cannot find any options for “DNS rebinding protection”.

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23

Could you once again stop and restart your server, then let it sit for a few minutes?
There has been a new certificate created for you, because previously for some reason there was none.

24

Oh it seems to be working now!
I can access it on all computers, ps5 and mobile (with or without wifi).
Just waiting to hear back from my friends, but I think it is working for everyone involved.