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I can't really tell if he never did or did the transaction the first time. But from the alert I received I can see two different dates 14/09/2023 which is the first day of the transaction, and the second date 15/09/2023 was the day I received the payment.
Yeah, you've said it earlier that it was 30 hours after that so, guess it couldn't have been just a day, especially since it's a working hours time delay on. Probably you know the dates way better and he might have squeezed in somehow and after all at this point it doesn't matter anymore. But, I myself would avoid this guy next time!
He definitely didn’t pay the first time, he just came up with a fake transaction receipt, if OP had actually copied the transaction ID on the re receipt and contacted his bank with that information they would have told you that the transaction didn’t exist then.
My hunch too, is there are scammers that don't pay a dime and there are stupid morons that pray on a possible 5% in price by delaying transactions over the weekend claiming bank's fault, if the exchange rate is favorable they pay if not they claim it's a problem and just cancel the deal.
I can't argue with your math, it
is correct

However, I still think that these p2p exchanges need a better chance simply because they don't get your ID just for trading your pocket money (I don't talk about whales and day traders here).
Which would make a no kyc exchange better than p2p deals?

Or would mean that you're safer if you stop trading real bitcoins and just play with derivates with your own bank if they start offering it.
Honestly, I don't know anymore, I was discussing at one point what's more dangerous, and well, I'm not convinced 100% that making p2p deals with somebody you don't know is way safer than dealing with a CEX, ad this is why?
Don't get me wrong, I completely hate CEX, I hate the charade that is called bitcoin cards with a visa logo, and I hate Binance and CZ probably the most on this entire forum, but let's not ignore facts, CEX are more convenient, that's why they are used because I don't have to contact some stranger, I don't have to log in my bank accounts and make a payment to exactly Quassam Bon Loden of exactly 1446.6 Euros to this account AD1400080001001234567890 and not one wrong letter and number.