Question:
1. So, why do you have to pay participants at the end of the month, and you count every week, how can your participants trust you.
Every end of the month is paid, and what if this campaign only runs for one month, because you mentioned there is no end date for this campaign, if the campaign key is complete.

Question:
Why don't you display a link like this: https://sifr.com/
for registration,
You did not show the participants, so your participants have to look out when registering, this is wrong.