I renewed my account today after it had expired. I tried to test https://github.com/SchedulesDirect/JSON-Service/issues/4 but it says my account is still expired. I'm guessing this is maybe something that is updated daily and that it will work tomorrow? If that's the case, I think this needs to update more often. The old xml interface seems to work right away.
Thanks for the update. I look forward to testing it.