New to Koreader - Integration Calibre Content Server & OPDS

[lethalox]

I have a Kobo Clara HD.
I have installed Koreader. Installed Version is 2025.04
I have Calibre installed on my PC. Version 8.8
I have Calibre content server running on port 9090. No Users or Passwords.
From another PC I can get to Calibre on the for both http://<IP>:9090 and see the OPDS xml at http://<IP>:9090/opds.
I can connect to the server wirelessly and see the Clara from Calibre.

I have created an entry in the OPDS for the calibre instance. When I try to connect I get an information pop-up with the following:

Cannot get catalog. Server response status: timeout.

Looking in Calibre Server Logs. There are no log entries other than the "calibre server listening on 9090", and "OPDS feeds advertised via BonJour at: IP port: 9090.

Any thoughts on how to fix or look further into trouble shooting?