Third party Mobile App on Play Store attempting to solve google recaptcha

Question

We expose some API's to a public website that consumes them via a RESTFUL API's that are exposed. To discourage third parties from attempting to use these API's for their own purposes, we have implemented google recatpcha.

It appears one very persistent third party is using a BOT to solve the recaptcha's. Which goes through several retry attempts as the bots are not perfect enough to always get around the requests.

I would like to report this third party mobile app that is attempting to solve this recaptcha via BOTs to the play store but im unclear under which category or what policy I would be pointing to that they are violating.

https://support.google.com/googleplay/android-developer/topic/9858052?hl=en

Can anyone suggest what policy I would indicate?

For reference this app developer is smart enough to offload the bot to a third party service and not run the BOT from within the app.

Also previous attempts to report on the basis of IP/copyright have failed, so would like to try the BOT/recaptcha route.

I'm hoping since recapcha is google and the app is on the google play store that google wont take lightly the fact this person is trying to get around it and it violates some policy.

Thanks. LD.

P.S. Will want to do the same for Apple as well.