I've signed up for 3-4 accounts per the instructions in this trail module. When taking the hands on challenge, I continue to get the following error"

"Challenge not yet complete... here's what's wrong:
The 'Trailhead_Data_Manager' app was not found. Please follow the requirements and ensure the wave enabled org is setup correctly."

I've signed up for 3-4 accounts per the instructions in this trail module. When taking the hands on challenge, I continue to get the following error"

"Challenge not yet complete... here's what's wrong:
The 'Trailhead_Data_Manager' app was not found. Please follow the requirements and ensure the wave enabled org is setup correctly."