If there is no valid payment method for you, you have 2 options:
1. Contact me direct via Discord message. I'll answer in a week, may be earlier.
2. Goto to funpay.com and ask for assistance in the chat. For a small fee, somebody will help you very soon.
The reasons to buy:
Boost the development of new features
Respect to the author
We improve ourselves by doing. If we try to get everything for free, we will get a great skill to download anything without money at the end of life. If we buy things and need the money for it, at the same end, we will get the skill to earn money. Let's think which skill is better. Make your choice now. Do the first step.