This computer is already associated with an Apple ID!?!
So, I have a Mac that I share with my wife (two user accounts with diff Apple IDs) both paired with separate iPhones and my wife's account also paired with iPad. Until recently I didn't have my own iTunes account and used my wife's and downloaded apps etc from it. Both Mac user accounts were therefore utilising the same iTunes account and a shared iTunes media folder, but seperate libraries. We don't use 'Family Sharing'.
With Apple Music now out, we've decided to split our iTunes media folder and I now have my own iTunes account, as we want seperate apple music accounts so our music doesnt all get lumped in together. Basically we've split everything properly between the Mac user profiles.
However, we have run into a problem. My wife has a past purchase on her iPhone that she wants to (re)download into her itunes library on the Mac. We are getting the 'this computer is already associated with an Apple ID' message and be notified thst this can't be changed for 90 days.
Can anyone explain why this has happened and any fix?
Is it because I've set up new iTunes account and accidentally nicked everything from the old iTunes account, so it thinks I'm on the rob.
I assume it is possible to have two separate Apple IDs with different iTunes accounts on a Mac via two user accounts or is this not possible? Perhaps the problem only relates to old purchases. Moving forward will new purchases work smoothly and separately between the two accounts/profiles?
MIghtily confused!!!! Any help greatly appreciated!
iMac (21.5-inch Mid 2010), OS X Yosemite (10.10.4)