Also, note to the dev, the easiest way although not one you would like, to prevent early leakers, is simply to reduce the time between the paid release and the free release, instead of relying on subscribers to be nice and wait 10 days or more, if you yourself release the free version 10 or even 14 days after paid release, it would significantly reduce leakers because leakers are less bothered to leak if the free version is coming out in the next few days anyways.