Well, I decided to renew my domain registration via GoDaddy (via a trailpay link) on Facebook. Did everything to the letter, but the Trailpay just showed a "view", not a purchase. Emailed their support my confirmed receipt from GoDaddy. Received confirmation that they got it one day later. Two additional days later, they email back that GoDaddy said that I didn't meet the terms of their offer.
I emailed Trialpay back that they've now SCR%$%d me as the terms of the offer prohibited me from using any coupons AND that I had to be a new customer. So, not only did I NOT get what I was supposed to for my $30, but it cost me more $$ than it would have to accomplish the same task WITH coupons.