I am trying to complete "Automate Your Business Processes:  Build an Automated Workshop Management System: Automate Post-Workshop Tasks with Invocable Apex " and when I click "verify step" I get -
Challenge Not yet complete... here's what's wrong: 
Couldn't find the "Thanks" badge in the instructor's Chatter feed after completing a Campaign.

I have rebuilt the flow and the APEX and I can't get it to complete, but the "Thanks" badge IS in the insturctor's feed when I change the campaign to complete, so everything seems to work, I just cant get it to "verify"