Second Server - cannot grant access to new server's libraries to existing friends

Server Version 1.42.2.10156 Win 11 (new) and Win 10 (old)
I have an existing server with four libraries shared with a few friends.

I have built a new PC and installed Plex afresh - this is not a clone of any type of the original. I want to gradually move my libraries over but this will take some time so I need both to run at the same time.

On the new server I have created three libraries but I cannot share them with anyone - if I go to grant access on the new server, it gets the friend list from my account and says I cannot invite them because they are already a friend.

If I go to the Manage Library Access screen of my account, it doesn’t seem to be able to see the new server, so again I can’t grant access..

I do not want to have to unfriend and re-friend them as this will be disruptive to them.

Help… please?

Finally worked it out… firewall issues on the router, forgot to port forward. The “Fully accessible outside your network” message in the Remote access screen is misleading.