Yes, they do send me a reminder, I think it's every year, and I either make changes or confirm my details are still correct. Of course, I can still say something is correct even if it isn't (no law against it), but at least from the point of view of the website, I can confirm they do try to keep things up to date.
Sorry to hear you're having trouble finding a teacher. It's worth persisting through other channels (ESTA, music shops, local universities/colleges, orchestra's, etc) as some teachers don't want to advertise their numbers too widely. But may still accept more persistent students who seek them out.