In the log I see this:
Wed Dec 4 22:45:19 2024 daemon.notice netifd: wgclient (1879): Name does not resolve: `**************'
While I'm abroad, I can't access directly Brume 2 but I could organize somebody there, if just I knew what to do. Could someone please give me an idea on how to solve this?
First, you should check if the GLDDNS is still working. Check here if the domain still resolves to some A record. If that's the case, note the IP down!
If you got an IP, change your WireGuard config to use this IP instead of the GLDDNS entry so you can establish the connection and reboot the Brume 2. After that, GLDDNS should work fine again and you can change the IP back to DDNS.
If there is no IP returned, someone at your house should reboot the Brume 2. If this does not work, they need to login into the Brume 2 and disable GLDDNS, wait a few seconds and enable it again.
Make sure to bind all GL devices to GoodCloud to avoid those problems.