Same type of phone and the same problem. I'm stuck on 8.1 update 2 and can't get w10tp. I tried reenrolling several times with a reboot included but still nothing. Guess I have to wait to Monday for MS to solve this. Why they release these things on a Friday is just weird.
[Edit]
? rebooted my phone(I do this by charging it, then shut it down). Re-applied the fast ring profile in the windows insider app for the third time, it rebooted for me automatically. searched for updates, and now it's downloading something new! (I'm already on GDDR2)
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