update - my "For You" tab started working tonight. However I have a caveat - earlier today I reset my music preferences. I have been trying to do this for awhile, but the newest Apple apps won't let you do that anymore. However, I do have a very old iPad2, with a pretty old version of iOS. The Music app on that one let me reset my music preferences. (i.e. re-do my music bubbles to show genre preferences). After doing that, I'm able to load "For You" in my iTunes. The "For You" recommendations do reflect my new music genres (it's no longer dominated by hip hop and pop - it has lots of rock, alternative, and blues). Anyway, that may be worth a shot if any of you have an old device laying around with an old iOS. But I have no idea how long it's going to last - each time I click on "For You" this evening I am holding my breath.