You're pretty new on this forum and it's hard to trust a newbie, I'm willing to join the team of software testers but It would either go through an escrow or you may send me the payment first and then I will start the work. I have tested many software before and testing your software would be a simple task for me. I'm also going to send you a DM soon.
Also, the reward is very small. I don't think he can expect a quality test for $3 or even $10. Even if it is necessary to download some software, from a stranger, it seems very risky.
OP, why didn't you write something more about your software, maybe you can get some ideas and suggestions based on that.