Both full version and the demo crashes? I have sent you an email.
I can't accept Alipay for now, I can accept cryptocurrencies on request. Hopefully the game will be on Steam in February.
Yes, it will be on Steam for sure, but everybody who buys on itch.io will receive a Steam key for free! And it really helps us, so don't hesitate! ;)
We will try to add more methods in close future. Using Paypal you can pay with a debit card without creating an account, if it won't work for you please wait a little.