Last night I unsubscribed from all their emails. Since I didn't see a way to completely remove my account I sent their help desk an email that since Groupon has banned firearms training and related services that I wanted to completely cancel my account and remove all my history and contact information from their service.
Got an email back "Although we typically respond to most emails in less than 24 hours, we're running a little behind right now. You should hear from us in about 48 hours." Dunno if this has anything to do with dropping support for 2A activities but we'll see what they end up saying.
No particular loss, since I buy a very low percentage of their offers but this divide-and-conquer strategy deserves pushback.