Ad audio playing during alarm?

This just started happening this morning. When I try to dismiss the alarm I hear what sounds like a gambling app ad playing. It is not visible on the Caynax app screen at all. I can’t figure out where it’s coming from.

Idk what’s going on, maybe it’s not Caynax.

App displays banner ad only when you are navigating within app - it does not show any ads when alarm starts.
It also from time to time displays full-screen ad but also when you are navigating within app. Beside that app shows short message that full-screen ad was loaded and that it will be shown.