Last time I got macbook and iphone from my brother. These devices were always connected with one apple id. I wanted to keep all apps and settings, so I did not create new apple id, I've just changed password, email, name of current apple id, so now it is only mine, not my broter's. And I don't know why, but imessage and facetime not working, on both devices. I can log in icloud, and everything if fine, but when I'm trying to log in on imessage or face time this appears :
"An error occurred during activation"
Before change everything worked. I have tried almost everything. Please help.