I don't really care if it gets locked - this thread now shows up near the top of the results if you Google Poweramp's support, so hopefully anyone curious about buying won't run into the same misfortune with their "support" as I did.
Frankly I don't care about whether they resolve it or not, I only came here with the hopes of a) getting an explanation and apology for how Alex has acted, and b) getting the word out there - chargebacks exist, and having looked into it so do cracks for IAPs, so one way or another I'll be getting free access to what I've already paid for.