Challenge Not yet complete... here's what's wrong:  Could not find a sharing solution 'Volunteerism Board'....
Error on  App Customization Specialist Challenge#1

Challenge Not yet complete... here's what's wrong:  Could not find a sharing solution 'Volunteerism Board'....
Error on  App Customization Specialist Challenge#1

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
 

Hi,

I'm not able to complete #2 Automate Accounts. It give me the following error.
"Challenge Not yet complete... here's what's wrong:
Please check the configuration of the custom fields on the Account object. The formulas, rollup summaries, etc. did not produce the expected outcome."

Can anyone tell me what went wrong? Thanks.

My Custom Fields configuration are as following:

• Number of deals (Roll-Up Summary field): Count Opportunity. No filter criteria
• Number of won deals (Roll-Up Summary field): Count Opportunity with filter criteria as "Stage equals Closed Won"
• Last won deal date (Roll-Up Summary field): MAX(Opportunity: Close Date) with filter criteria as "Stage equals Closed Won"
• Deal win % (Formula field): Number_of_won_deals__c / Number_of_deals__c
• Total amount of won deals (Roll-Up Summary field): SUM(Opportunity: Amount) with filter criteria as "Stage equals Closed Won"
• Call for Service (Formula field): IF( DATE( YEAR(Last_won_deal_date__c)+2 , MONTH(Last_won_deal_date__c) , DAY(Last_won_deal_date__c) ) <= TODAY(), 'YES', 'NO')