If it's not an outright scam it's a gimmick to get you to do something else that benefits them. No one is going to give you free money for just tapping a button once a day without an ulterior motive. Maybe it's just to get you to advertise for them on social media like you have been. You should be asking yourself how cheaply you are willing to be paid to advertise for someone. Personally I don't trust anything that someone is paid to advertise. If something is really worth it then people will talk about it without being paid. Be careful about who you do business with.