I have 3 sites connected to the same account with all separate domains and cpanel hosting plans. I'm trying to access their cpanel through my Godaddy account but it keeps failing, only showing a 'This site can’t be reached
a2plcpnl0253.prod.iad2.secureserver.net unexpectedly closed the connection.' page for all 3 sites. I also cannot connect via filezilla since last night to any of them.
Were you able to get connected? If you're still having trouble, have you tested access to your cPanel from another network connection to see if you're able to log in that way?