Your App shows advertising (I downloaded it and tried it). I noticed that the last update you did in September and, from what I understood by reading this post, that’s why you’re safe, because the trick is only for updates or new Apps released for about a month and a half .
So if you upgrade now, in theory, advertising should become invisible. If you want to try without risking anything, create a closed internal test (with only your email address inserted) from Console Developer so only you can install the update.
In the meantime I noticed some problems of visualization on the screens with my cinafonino (Ulefone Vienna). If you contact me in private I send you the screenshots I’ve made.