There is no way to edit DNS through Plesk as of right now. It needs to be tweaked and implemented by Krydos.
I will escalate this to him in the meantime.
Domain changed. Please note that you either need to point an A record to 65.19.141.77 or use our nameservers (ns1.heliohost.org and ns2.heliohost.org) in order for your domain to start working and to be able to install SSL on the account.
Reason: lfd: (imapd) Failed IMAP login. Please make sure you don't have a rouge email client trying to login to your mail
Unblocked. Give it about 10 minutes to take effect.