Never mind, just saw it on the doc that I have to call rails using the zammad run rails c command. After doing that and changing the FQDN it worked like a charm!
Thank you both, this can be considered solved.
For those like me (I’m working using putty on a windows machine).
-SSH to your Zammad
-Use SU - to elevate to root
-Call the rails console using the command: “zammad run rails c”
-Check the FQDN using Setting.get(‘fqdn’) (It will show something like zammad.example.com).
-Change the FQDN to your IP or domain name if configured using "Setting.set(‘fqdn’, ‘new.domain.tld’)
In my case HTTP was already correct, but if yours is not:
-Check the HTTP using "Setting.get(‘http_type’)
-If you need to change it either to HTTP or HTTPS use: "Setting.set(‘http_type’, ‘https’) if for example you want to change it to HTTPS.
Thank you for helping me on this.
Cheers!