I did some reward campaigns on a page called HourlyMiner.com they were very good, I got $ 20 a week for doing campaigns on that page, but it is currently offline. I am waiting for them to open it again to continue earning money from campaigns on that page. they paid every Saturday.
I agree with your comment and recommendation, many times they take advantage of and abuse the naivety of people who, in order to earn some money, exploit them or do not pay them for the campaigns that are carried out. I have been a victim of these scams