Rig owner will refund your purchase if he decides its more worthwhile to mine the same coins himself. Shady at best.

Is there a way to lookup my username?

Probably never, they are trying to get miners to return to mining before paying. Manual payouts should have nothing to do with MPOS problems. Scam pool, pay people and returning to mining will not be an issue but asking people to return before you pay after over a week of holding our coins is a problem. They owe hundreds of millions of Diem from the first day of mining.

Why don't you payout the Diem you owe everyone from launch date or respond to messages/emails?

Now Eminer.pl has changed my login details. 35M Diem still stuck...Any word on this?

Due to pools going down/having block scoring issues at launch and not being able to watch it all night. I had over 10M CDC balances on 3 different pools. cdc.suprnova.cc cdc.eminer.pl and cdc.mineoncloud.com and was unable to cashout. I contacted all of the pools earlier today and have only received my balance from Mineoncloud. I am receiving my auto transfers from suprnova.cc but not the original balance stuck in the system. Be careful and setup qt asap