How do I quit my pousepose account?

I want to quit my mouse pose account on my Mac but I dont know how.
I cant log in in my microsoft account. Because it says it does not reconise my email. And because the email is personal? my other emails do not work also.

I’m sorry to hear that you’re experiencing trouble with your Mouseposé license. I have attempted to locate your license using the email address you provided, but unfortunately, I was unable to find any associated license in our system.

To help us resolve this issue, could you please select “License…” from the Mouseposé menu to open the license window? Once you have the license window open, please take a screenshot and send it to us at support(at)boinx.com. This will allow us to locate your license in our database and ensure it is tied to the correct account.