Incorrect Apple ID with Yosemite?
Hi, I have a macbook pro 2009 and can't update to Sierra, so stuck with Yosemite. I can't connect to Itunes from the laptop it keeps saying "incorrect Apple ID" when it's the good one (it's working everywhere else). The only solution so far is to change the password over and over again but it's exhausting and non productive at all. Can anyone help with that please? Thanks a lot.
MacBook Pro, OS X Yosemite (10.10.5)