I felt cheated that someone was able to take my spot. I guess it's similar to TX getting into a Bitcoin block.... I'm done with it but if it's understood that it's like that and you still want to play go ahead.

That's by design. If an opponent (another player) bets on the same minute, then they are now occupying that field and win if a block gets mined for that specific minute. The more opponents try to occupy a field, the higher the bets are for each player to keep occupying a specific minute.

1984

I stopped playing also. I paid for a few minute blocks and someone else was able to take it after I already paid the invoice. Maybe that's how it works IDK