There was a PayPal button on the PowerUP website. We stressed many times that any future support for that version depends entirely on donations. Since less than 10 percent of people that registered decided to donate anything, we felt there is no point in continuing the service. It's a bit too late now... if there were more donations, 2.1 or 2.2 could have been released. That's not really something I'm motivated to do anymore though.