Lets see, there are 3 participants already and there are still 3+ days before the first match start.
Frankly, I doubt that there will be more than 20 participants.
One more participant is joined to 4 and it is still far from the minimum of participants.
Freebet prizes do not change for 1-40 participants with different specifications, if for this paid round the minimum participant is 50, if this paid round still run then there will be 10 users who will not win the free bet.