I'm unable to get the mainsail interface open, it's just stuck on the Initializing screen. I tried to fix it by reinstalling moonraker b/c I thought it might be related to the allowed clients list. That didn't solve the issue
Solution
For Anyone else suffering such issues: Solution was: 1. update Mainsail Via Klipperscreen - (or presumably you can do so via CLI as well if you don't have a display) 2. Edit the Moonraker.conf to include the network on which to trust clients. 3. Restart moonraker and probably mainsail services ( I rebooted the entire system ).