Thankfully, I verified that the email method of submitting spam is working perfectly at this time. Each verified account has its own email address it can use for submissions.
I'd like to say the problem was being caused by a DDOS attack from some SpamBot network. That's easy to solve. But there is no sign at this point of that being the problem. IMHO they have hosed their server and don't have an adequate backup to restore it again. IOW, IMHO, FGS!, they broke the #1 Rule Of Computing. It doesn't get any worse. I.E. not good.
It is particularly disturbing to me that SpamCop has not publicly acknowledged this problem. There is no official announcement anywhere on the site. That means they're freaked, have no solution, and/or are too embarrassed to admit the situation. I.E. not good.
I'm sure the SpamRats are having a party. SpamCop remains a primary source of free spam blacklist data to the world. Enjoy the party while it lasts little SpamRats. We have other methods of spam reporting up our vigilant sleeves. Darn! :-P
As the SpamCop.net problem evolves, I will be reporting here.