Even when keeping all the what is true and what not aside, the fact alone that you volunteer to help with a project, but then decide that you want money in return to finishing it (after you are halfway through with it) is something I cannot approve at all. We all are volunteers, the admins are, the mods are (as you should know), as are coders and spriters. This does not mean that people cannot ask for something in return of their work. I also, more than once, paid a considerable amount of money, so that specific things, that were in limbo or so much work that the person in question just wanted something in return for the considerably huge amount of time in return, were worked on. But this is not the rule, nor should it be.
Imagine our coders like Geeves, Matt, Alb, GreyWolf or any other contributer would take money for each and every bugfix/PR. There would be absolutely 0 server developement. This is all ignoring the question what was written above is true or not, it's nothing I can and want comment on, since I am not involved.
tl;dr I find the attitude and mindset shown by you questionable for a spriter/developer position at best, unfit for any other staff position at worst, but that's not for me to decide. Big -1 from me for this app.