First note, because I weren't able to check this earlier - I'm not sure where did you send donation, but for sure it wasn't sent to me, which is the only source mentioned by the "Donate to this plugin" link). Mostly I don't need to hear anything like that to check an issue. Everything depends do I have enough time to resolve particular thing.
But I don't like to be cheated.
Second note.. 10 minutes is really short amount of time, especially if you don't have someone available via chat. No one gonna wait every single minute in front of his/her computer, because you may suddenly answer on the message. This is not the phone, but a forum.
But I was lucky and I've managed to get a brief look at this. But nothing has changed.. the problem is related to some other plugin or theme.
This is where it starts - check the source code of your page, line 21: you can find accidentally opened comment tag <!--, but it's missing the closing one -->. If you manage to close this correctly everything will start to work.