has anybody run into this error in App customization specialist superbadge

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: EPSDBFPB

I am facing another issue on this superbadge, specifically in Challenge #10, i am getting the following error:
The Campaign Influence Lightning report must have the correct 1. Aggregate, 2. Columns, 3. Groupings, and 4. Filter.

The requirements have no mention about what fields, groupings, filters, aggregates to include in the report. What am I missing?

I am new to salesforce. I have a community for my users in sandbox.Community is in the preview mode.The login to the community site is working just fine, i can login to the community with the test user's credentials.The problem is when a user forgets their password and tries to reset it. It sends an email to the user with the template assigned to the Forgot Password community setting. The email template includes the {!Community_URL} merge field. Ideally the email received contains a link to the page with some type of reset token as a parameter(your_community_domain/communitiy_name/login?c=TOKEN),and it should be redirected to the change password page. But When the user clicks on the above link, it gets redirected to the link (your_community_domain/communitiy_name/secur/forgotpassword.jsp?r=some token) which redirects to login page and thus there is no way for them to reset their password. Interesting thing is as community is in preview mode ideally it should not be sending any forgot password mails, but in this case it is sending mail with wrong url.

So what should I do to fix this issue? Any kind of help will be appreciated.Thanks.

I'm doing the simple lightning components challenge and have hit this problem in my existing trailhead org and a brand new dev org that I've just created:

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: QVWBQHAG

I need to be able to conditionally change the color of output text based on the value of a fi\eld in a custom object.  How do I code this in my VF page?