You can add your IPV4 in your interface. To do it :
– you should go on your server management page (Services >> My services >> select your server (View details)
– select IPv4rDNS
– on the next page, you have to fill the two fields
You have to select your IP in first
rDNS (reverse DNS) : you have to fill your reverse DNS exemple:
To finish click on Update Reverse.