DrayTek 2766, no remote access via uPnP or Port forwarding

Plex Media Server Remote Access
1

Server Version#: Version 1.32.3.7162
Player Version#: any

Had sky router, worked perfectly with uPNP - changed to talktalk a few weeks ago, uPnP wouldn’t work so set up port forwarding - that worked.

Have now changed router to DrayTek 2766, and have switched on uPnP but doesn’t work - have also set up port forward but that also doesn’t work. The remote access goes green for a few seconds, then goes red and says not available. :confused:

I check for double NAT issues, but all looks OK. Not sure where else to look?

I see this in the logs if it’s any use?

Jun 08, 2023 15:46:26.894 [139735333243704] DEBUG - [EventSourceClient/pubsub/178.79.179.11:443] EventSource: Got event [data] '<Message address="xxxxx" port="32400" asyncIdentifier="xxxxx" connectivity="0" command="notifyConnectivity"/>'
Jun 08, 2023 15:46:26.894 [139735333243704] DEBUG - [EventSourceClient/pubsub/178.79.179.11:443] PubSub: Got notified of reachability for async identifier xxxxx: 0 for xxxxx:32400 (responded in 5034 ms)
Jun 08, 2023 15:46:26.895 [139735333243704] DEBUG - [EventSourceClient/pubsub/178.79.179.11:443] MyPlex: reachability check - current mapping state: 'Mapped - Publishing'.
Jun 08, 2023 15:46:26.895 [139735333243704] DEBUG - [EventSourceClient/pubsub/178.79.179.11:443] MyPlex: mapping state set to 'Mapped - Not Published (Not Reachable)'.
2

So just for completeness, I haven’t been able to get uPNP to work, but I did at least get the port forwarding working (called port redirection in the draytek)… just needed a router reboot and it kicked in properly.