I might be wrong, but isn't 96% winning chance expected, when you have 24/25 winning fields to choose from? Your program shows that the site really works randomly   you have to know that you have to win 30 times to make up for a single loss, this is where the house's edge comes in play. However, if you have sufficient balance, you might be able to win by doubling your bet on loss. It seems highly improbable that you would ever hit a 5 in a row losing streak (1 in 10 million tries) and you would only need a balance of 1000 satoshis, which you would indeed have, provided this does not happen in the first 1000 games.

I might be wrong, but it looks too good to be true to me...