We've tried to make it clear but we're always happy to answer additional questions

You're right, this budget:
$2 000 - minimum 250 eligible participants
- $1 000 - minimum 150 eligible participants
- $500 - minimum 100 eligible participants
- $400 - minimum 70 eligible participants
- $300 - minimum 50 eligible participants
- $200 - minimum 20 eligible participants
- $100 - 1-19 eligible participants
is for the whole campaign, not a weekly budget. But that's just a smaller part of the compensation, given that there is referral link that allows you to earn 70% of the trading commissions, which is unlimited and can grow to substantial amounts. While you're focusing on fixed budget, I'd like to point out that it's likely the much smaller part of what participants can get compared to referral part of the campaign.
let's be real here the allocated budget for every participants is just 8$ that's the only guaranteed payment . The referral commission is different things do you really think its easy for people to registered In your exchange using signature? You will only get commission if the referral you invite continue using your exchange which is we know that it will not gonna happen unless there are something your exchange have to offer so users will stay.
If there is no users even how big your commission is its still nothing .