Hello All, I cannot figure this one out and have searched everywhere trying to find a similar problem. But keep getting the following error:
Challenge Not yet complete... here's what's wrong: 
Could not find the 'Volunteer Activity' field or it is not configured correctly.
The field is in both objects that it is required to be in. My formula is:
Volunteer_Activity_r_Volunteer_Organiza__c! Any suggestions would be greatly appreciated.

I'm unable to check step 2: Automate Accounts because I'm receiving this error: 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: ZKCVFIZH