Hi @MiDniGG ,
bear in mind Calls is currently in closed beta and not officially released yet even though the plugin is available for download/install. This means documentation is not ready, the plugin is not to be considered stable and support will be limited.
With all that said, from the logs you provided it’s most likely a connectivity error causing a timeout on the UDP port. So the client cannot connect to the advertised host at that port.
To help you further I’d need more information on your deployment and how the plugin was configured. Is the IP address showed in the logs the one from the instance running Mattermost?
