Error Connecting to Devevolper Edition for Superbadge: DOXQPRHG

I am currently trying to work through the superbadges. I am attempting to check some of my work on the superbadge. I have worked on it some in my original DE but there was a comment about having trouble with existing DE's. I created a new one but I am still having trouble connecting and checking my progress. This is the error that I am receiving:

Challenge Not yet complete... here's what's wrong:
There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: DOXQPRHG