When I use the text message app that comes on the phone, it is now telling me it is unauthorized.  Has been happening since I upgraded to 7.0

When

Should have said I have a Moto g 4 plus

Have you tried to replace it with the latest per Re: PSA: Google Messenger Now Android Messages

I am using the Google messenger now android app. That is the the one giving me the error.

You should update to Android Messages … per the link previously provided, that has replaced what you’re using

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