iTunes asks to authorize my computer when trying to sync my iPhone.
I just upgraded to a new 2019 iMac. Tonight, I tried to backup my phone to my computer when using iTunes. I have previously authorized this computer to my iTunes account. When my phone tries to sync I get the following error message. "This computer is no longer authorized to play purchased items that are not he iPhone "iPhone". Would you like to authorize this computer for items purchased from the iTunes store." When I click authorize, I get a dialog box with an incorrect Apple ID that I cannot change and my password is not accepted. I have tried reauthorizing my computer and my iPhone to my iTunes account, but I still get this error. Any suggestions?
iPhone 6