I have tried to get get challenge to recognize challenge completed many times.  I used a new playground launched it successfully created DreamHouse app: I even get an email stating that.  I then initialize sample data.  All is well but challenge states the Dreamhouse app does not appear to be installed.
email
Your request to install package "DreamHouse Summer 2017" was successful. Along with my organization. Trail

Developer Beginner 
Platform Development Basics 
Get Started with the Salesforce Platform


​

Thanks

  I have tried to get get challenge to recognize challenge completed many times.  I used a new playground launched it successfully created DreamHouse app: I even get an email stating that.  I then initialize sample data.  All is well but challenge states the Dreamhouse app does not appear to be installed.
email
Your request to install package "DreamHouse Summer 2017" was successful. Along with my organization. Trail

Developer Beginner 
Platform Development Basics 
Get Started with the Salesforce Platform


​

Thanks