Hi, i have a 3cx hosted on a hosted Debian 8 VPS (3cx Ver 15.5.0) After some problems with my Server Infrastructure, i reinstalled my 3cx on a new server. All good. since one month i receice the following email every Day. Any ideas? I use a 3cx FQDN HTTPS Certificate renewal Failed - FQDN is already in use This FQDN is taken already. If the FQDN was available at the moment you installed and now it is not, it means that the FQDN is bound to another license key. If you need to keep on using this FQDN, login to your customer portal and confirm to which license key this FQDN is bound.If it is bound to another license key, then you will need to release it from that license key and use the FQDN reservation for this installation.