Error description not available
hello
I have one account for all my devices, one iCloud account, one mail (Mac, iPad and iPhone)
ive updated all of my devices to iOS 9 public beta and Mac for el capitan beta.
Tthe first problem I encountered was message error 'description not available' when I tried to login to Apple Music on my Mac (it worked previously)
i thought it's not a big problem because I could still listen music from my iPhone 5s
today I purchased iPhone 6, which had iOS 8, I tried to restore it to back up from 5s and and when I first turned on iPhone 6 where it days 'create a new Apple ID' or 'use an existing one' I enter my existing Apple ID and password and it wouldn't let me do that and says again 'error description not avaialble'.
OK, then I tried make a back up from iTunes connecting a phone to a Mac It worked!! But then when I tried to use Apple Music with the same Apple id, it says again 'error description not available'
what is the problem? Is it beta which is not stable or problem with my Apple ID?
what can you suggest?