What does "Subscriptions not enabled for this client" mean? It is an error message that shows, but I still receive email.

NULL

Same here…

Same here too.

Ditto

I am now getting this also

Same thing started on my two accounts as well.

A reply from tech support would be helpful???

The same way it has started, now it’s gone.

Sorry for the delay - it was a temporary issue on Google’s side. It should be already fixed.