Buying Pro version without Google Play Store

[LonelyInstantN]

Due to Google has no service in my contry. I have no "Leagal" way to add up fund in my Google Pay account (mainly due to google is restricting gift card usage, I bought a gift card but Google said my usage is suspicious and wont let me use, wasnt like this few years ago). So there is no way I can buy a Pro version of this app.

Is there any other way to get a Pro version? Like sponsering through Github? Or directly buy through paypal?

I really like your app and really want to take good use of it. Looking forward to your respond.