We have a hosted setup at 3CX, but we cannot access management / backend. Shortly before we received a message from the web server did not respond, what do we do?
@frfr as per our chat conversation, same key has just been deployed to another machine, and as you have adminited this is your new Hosting Provider.
As mentioned, one machine must be active and not 2 at the same time with the same key or else the FQDN will flip between the 2 public ip addresses of the PBXs.
If you want to keep the Hosted by 3cx machine, login to the provided ip address in the chat and restart all the services to bounce back the FQDN to the Hosted by 3CX machine.