Huh, I (having a policy of believing the best in everyone until proven otherwise) were about to say that he prolly just keeps on begging for money while fully intending to still fulfill that bargain struck in ch36 (would be a scummy tactic sure, but still fully within the bounds of his words.) - but then I looked at the upload date and say it says a timestamp more than 3 days (the time-limit his deal specified) ago.
All that is said with the aforementioned policy leading me to assume you are speaking the truth obviously, about donating those 50 usd >3 days ago. Which tbf I don't see why you wouldn't, but I also don't see why OP would be lying about their deals either (particularly with how everything about it [the deal] is stacked in their favour anyway, everything from no transparency on collected amounts, to no guarantees on quality, to a few other things.)
Whenever I encounter a situation like this, where two ppl speak opposing truths to eachother, my conclusion is always that there has been some kind of misunderstanding or error. In fact, that turns out to indeed be the case more often than not - you would scarcely believe how often ppl have noticed they left their responses in the drafts-folder before they start complaining to someone about never responding to their response. Or maybe you would believe it, simply from how common that error is.
And as such my opinion is always to let ppl work things out between themselves without having to join in as an unrelated third-party and point fingers at anyone, and at most I'll instead try to suggest possible situations that might have happened for the situation to occur unintentionally, or otherwise suggest that ppl keep their tempers tempered and let those with actual proof present their proofs. Or I might write some large shitpost about how things are unknowable from my perspective, until further facts appear
After all, it's not like anyone
would ever
do something maliciously or amoral, or worse, intentionally lie. Surely that's impossible, right? Particularly if money's involved and there are profits to be had in doing so? Or participants are anonymous?