I did a search and could not find the answer to this problem, so here goes...
I tried to redeem this certificate today with absolutely no success. I kept getting a message to call online support. When I was finally able to access an actual person, it took another 20-30 minutes for her to tell me that I can only redeem this certificate for all coach or all first segments. This is a new wrinkle! I live in a village which only has regional jet service...and I've never had trouble redeeming this certificate for coach connecting to first in the past.
Is this a change in policy, or do I just need to keep dialing?