Trailhead Superbadge:  Lightning Experience Rollout Specialist, Challenge 7

I get the following error:
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: FUGRLDMP

I've done the following:
1.  This is a brand new Trailhead Org that was setup specifically for this Superbadge.  
2.  I have tried logging out of both the Org and Trailhead.  No impact.  Same error.
3.  I tried renaming The "Sales Operations" Dashboard to be just "Sales" and then clicked on Check Challenge.  The Challenge correctly identified that the Dashboard "Sales Operations" does not exist.  I renamed the Dashboad back to "Sales Operations" and get the above error.

Thoughts or suggestions?

Thank you for your time!
Virginia

Please can someone advise the best solution to follow for this Superbadge. I'm stuck on importing cvs files using the Dataloader.io and have watched the io tutorial but haven't a clue how to match the cvs fields with SFDC none existent fields.
I'm going to have questions all the way through this.
Is there a video walk-through availabler?
Anyone can advise?

Got this error & just following directions...

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: HQVTALII

It is a brand new org.