realize this post is kind of old, but I just had the same problem.
Went to online chat with HTC and they fixed it up for me in a few minutes.
I said nothing about boot loader, just put "problems with google drive promotion" in the chat subject.
What was strange was that they guy asked me:
"Thanks for that information. Our system indicates that you requested to unlock the bootloader of the phone. Is this correct?"
I played dumb from then out because I never requested this via the HTC dev site.
He sent me a promo code via e-mail directly.