I have completed the activity for "Working with Custom Lightning Components" I setup "My Domain", I installed the "Contacts Today" lightning component. Added the component to the "My Data" app which was created in the prior module and saved the changes. Upon checking it through the Trailhead. It says:

Challenge not yet complete... here's what's wrong: 
The 'My Data' Lightning App was not found.

Any advice on what to do? 

Thank you in advance.

We're having trouble with the "Extending Reports using the AppExchange" module in Trailhead

We keep getting the same error when checking the challenge at the end of the module:

Challenge not yet complete... here's what's wrong: 
The 'LEAD Trend by Source' dashboard component does not have the wedges set to 'Lead Source'.

Wedges ARE set to 'Lead Source', did anybody get this error message? do you know what the solution may be? Thank you!