Agreed, I had to search to find the old model number for the kit. The newer model number, 8547, wasn't recognized. I imagine the educational kit would also not be (9797). As a college student and having tutored kids using the educational kit, that's a pretty large user base that would have difficult accessing the site. I'm sure there's a good amount of people that would get frustrated with registration and decide not to contribute.
Any way to maybe add those two numbers to the acceptable answers for that question?