Hello jeannettebailey.
Thank you for using Apple Support Communities. We want to make sure we're on the same page and understanding your issue correctly. That way we can do our best to assist you or point you in the right direction for help. It sounds like you're experiencing issues when attempting to use your Apple ID with your iPhone. You had mentioned that you're getting prompted that your account isn't authenticated. If so, allow us to assist.
If you visit the Apple ID website or iCloud website, are you able to sign in without any issues or are you prompted with verification errors?
Manage your Apple ID
iCloud - Apple
If you're unable to successfully sign in, check out the following resource for troubleshooting steps you can attempt:
If you can't connect or sign in to iCloud - Apple Support
If your issue is something completely different, please share some additional details with us. Cheers.