can not successfully reigister the Napekin competition

I did rigisteration three times but failed.
I sent the issue to napkinsketch@core77.com and napkin_sketch@core77.com, also failed- the mails were reback.

what’s up?
thanks

We’ve had some problems with our email server. Registrations are being processed, but the email confirmations are not being sent. We’re investigating this right now. You should get an email soon.