Can't Login to iMessage on MacBook Air
Hello,
I have an updated MacBook Air, an updated iPhone 6s and an older iPad. I have been able to login to FaceTime on all three devices. However, for iMessage, I can't login on my MacBook Air. It works great on my iPad and phone but I get an error message every time I try logging in on my MacBook Air.
Any suggestions?
Thanks,
MacBook Air, null