Please setup a paypal account, or start asking for "Pay what You Want" here on twitch like many other devs do.
Something must be wrong with your ability to receive PayPal payments. I tried 4 times to send you some cash but each time PayPal tells me the payment was unsuccessful. So I go to my PayPal account to see the details and it shows that each time I paid, it was immediately refunded by you. Now I know my PayPal account is OK because just yesterday I successfully bought some vitamins at iHerb.com.