I try to check the challenge and I get the following message:

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: OFAAAFOD

I use a new DE.

Any suggestion?

I have built the reports and dashboards as outlined in the requirements, but I'm getting the following error "Challenge Not yet complete... here's what's wrong: Couldn't find a component with the title 'My Top Accounts'."  


However, I have the component on the dashboard as you can see below.

What am I missing?