I created a leads report for Trailhead challenge but it wont recognize it. 



Here is the challenge:

Create a Leads report.
Make a report that shows you a count of leads grouped by source and rating.
Name the report 'Matrix of Leads' and save it to the 'Unfiled Public Reports' folder.
The new report should be of type Leads.
The report should be matrix format, show 'My Leads', and the date range should be for All Time.
Column grouping should be by Rating.
Row grouping should be by Lead Source.
We won't test for this, but hide details to simplify display.

I installed the data.com assessment app but Trailhead won't recognize it. 


Here is the challenge:

Install the Data.com Assessment App
Your VP of sales wants a 360-degree view of all the company’s accounts. Before you provide any reports, you want to assess the quality of your data. Install the Data.com Assessment App from the AppExchange, and review the results to determine the quality of the data.
Install the Data.com Assessment App into your Developer Edition, following the instructions provided in this unit.

I installed the data.com assessment app but Trailhead won't recognize it. 


Here is the challenge:

Install the Data.com Assessment App
Your VP of sales wants a 360-degree view of all the company’s accounts. Before you provide any reports, you want to assess the quality of your data. Install the Data.com Assessment App from the AppExchange, and review the results to determine the quality of the data.
Install the Data.com Assessment App into your Developer Edition, following the instructions provided in this unit.