Thanks for the logs.
Your description plus the logs shows your server got signed out.
Do you have Package Center working again (the patch applied) ?
If so, you can do the following:
- Uninstall the PMS package
- Reinstall the same SPK file – EXCEPT
– Use the Plex Claim Token option - Click “Get Plex Claim Token”
- COPY the token from the browser tab which opens
- PASTE it into the install menu page
- Click NEXT NEXT DONE and let it install & claim for you
For reference, here’s the FAQ