TA4Audi

Connecting a Galaxy S7 Edge to the Audi MMI system, I have enabled Bluetooth and paired to the system. The first time I got it synced it showed both text messages and emails. On every subsequent attempt I can now only see emails, whenever I try to check texts it says there are no texts to display. The text message option in the Audi MMI system options is greyed out, and always has been. I know this works because it showed up correctly the first time.

I saw a previous thread here with this subject but no resolution. What am I doing wrong?