I see what you're seeing but not finding any way to enter my ISP, but I don't really think that makes any difference. When I enter my ISP by zip code, it does nothing and it doesn't stick either.
FWIW though,
Flash based tests are known to be the most inaccurate type you can use and the one's on this site have ALWAYS sucked big time!
Just ran 2 tests and the best result for download speed was a whopping 8086Kb/s/7.8Mb/s!! Gads, that's sucking even more than I remember this site's tests sucking!

Been a real long time since I've used the test here.