Prevent app from using in-app purchases?

I installed an app and it has a subscription for the pro version in-app. It automatically selects the account and shows the added cards in the subscription popup window I cannot change the payment account, I guess it grabs the account from Google Pay installed on my phone which I use for everyday payments. I don't like it, I don't like when some arbitrary app that I don't trust has access to my payment profile by default, and I like to disable such possibility for the app. Is there a way? I don't understand where this possibility comes from, I didn't grant any payment permissions for the app. Is this permission inherent for any app and I can't disable it? Answering future questions: I **tried** to install this app from another account like suggested here , I **tried** to reinstall, and I even installed this app from APK in the end. No result. It still points to the same payment account, I guess it was saved from the first time in the very beginning when I installed the app from it.