Never any errors in the vehicle, only in the app and there are hundreds of them.

Any way to get Mazda's attention on this?

 

When you took it to your dealer what did they say? Did they scan it for codes, check for bulletins, or call Mazda if they cannot figure it out?

Edit: take it to the dealer. There is a bulletin with a nice workflow for them to follow in sorting the issue. They can see if it applies to your vehicle.
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When I brought it in for it's initial service, the issue had yet to appear. I did call the dealer, they had no clue what the problem could be. Maybe next oil change, I'll take it to the dealer (been using my local mechanic for service). Thanks for cluing me in on the bulletin.