Well I tried it with a completely different phone on a network that I had in fact downloaded the unlocker from once before. Then I tried it from a different computer but still on the same network. Then I tried it on what I think was a computer and network that I had not used before but still nothing. Then I just clicked yes to donate, gave my $5, and it worked fine. So it looks like all you have to do is donate $5 and it will work, or have a phone that has never been used before with the unlocker and make sure to use the unlocker on a computer and a network that has also not been used before. My question is once you donate can you use the unlocker multiply times or do you have to donate each time?