We currently offer 2checkout, which is integrated with paypal so you can pay with paypal, we use 2checkout now because we had a lot of issues with paypal and they didn't do any fraud checks so we lost lots of money. 2checkout do some fraud checks which you shouldn't worry about, after the billing page there is payment option where you can either pay with creditcard or paypal. If you haven't found it out yet i'll post screenshots on a step 2 step on how to donate with 2checkout.