3- The duration of the campaign is one month only, and the amounts to be paid have not been determined yet, but the minimum payment is $ 25 per week for a member and the number of posts is only 30
minimum? does this mean that your campaign would have a maximum amount? And seeing that number of posts is stated as "only 30" then how does the amount paid change based on post? Reference a bit on how campaigns work so you could put out clear rules before it starts, especially since the period of your campaign only lasts for a month.
Note:
This project aims to support cryptocurrencies in the world, and 15% of the profits achieved by product sales will be allocated to donate them to children's hospitals in poor countries, and if the sales are huge and the advertising campaign succeeds with your help, the director will also work to support education in some universities that You need that.
Donate on their Bitcoin wallets, afaik there are some that accept them, so that you can at least show proofs that you actually did like what you said. This could be a direct boost in reputation if you did as such, and might as well list the specifics on where you would donate.
4_ A competition will also be launched for the best cover design for the product, and an amount of $ 500 will be paid to the member who submits the best design (note that only one member will be selected)
Then I'm assuming that you would use said design as the official logo or something for your brand? Might want to clarify that or something just to be sure especially to the winner.