To readers:
I am seeking help from someone with a master expertise. From what I've gathered, creating a custom patch to work efficiently would require a champion skillset

Brief Summary:
Mango Languages is a language-teaching app that can't be beat (think a better version of Rosetta Stone). Sadly, I cannot afford it. So I am seeking someone who can create a custom patch to make it accessible.

Details:
*the app is free to download, but after a certain number of lessons, you need to purchase

*the purchase type is a subscription, not a one time purchase

*I am unsure if the app is connected to an online platform (i.e. Clash Royale) but I assume it is not

What I've tried:
*Proxy server for inapp purchases & license verification with uninstall and install
- essentially, what you would normally do to remove in app purchases

What you're working with:
*I have a Samsung Galaxy S9 Snapdragon SM-G960U (non-international: US version)

*Currently on Android Version: 9

*Device is: unrooted
- not able to be rooted, as well

In Conclusion
I would be beyond grateful to have a chance for something like this out of my reach. Thank you in advance to anyone confident enough to take upon this exhilarating challenge!