Part good news, part bad news.
Vlad eventually responded, and I was able to buy my key manually. Took a few weeks, but he emailed me my key the other night. The bad news is when a I went to open my XBox franchise file, it said the file was either not supported, or I didn't have the requisite license.
I bought the Guru license, so I'm trying to get ahold of Vlad to see if there's been a mistake. For those that have used this, do you know if it is indeed possible to edit Xbox franchise rosters through the reditor? I'd hate to throw my franchise away and start over with a fresh roster.