I guess we should not consider this campaign as active since the funds has not sent to the escrow yet.
According to OP, campaign will formally start on March 21,2019 (Forum Time).
There is no limited participant, I guess.
There will be a limit for sure maybe he forgot to mention it.
Another campaign and it looks fishy but manager said that they are considering an escrow.
Supawin Signature campaignPay Rates (Prize):
● Jr member = 0.1 USD per post
● Member = 0.15 USD per post
● Full Member = 0.3 USD per post
● Sr. member = 0.5 USD per post
● Hero Member = 0.8 USD per post
● Legendary = 1.2 USD per post