I downloaded some apps on my friends iPad using my own apple ID. I signed off but everything I downloaded went to my own IPad too. Now messages are popping up saying that I shouldn't delete certain things because they are on my " other device." How do I fix it so where apple doesn't think I have two devices? Also, I sure my act of deleting the apps I downloaded for her affected her own IPad.
In iTunes sign in to your Apple ID.
Then go to the iTunes store (top right), then click your account (top left). Once your account details load, there will be a section in the middle about iTunes in the Cloud.
You want Manage Devices on the right (but still in the middle) - click on it.
From there you can review all devices and remove the ones you no longer care to have associated with your Apple ID.