Like someone have stated, this is a form of affiliate marketing, CPA marketing in particular. there is no way people can be able to get $400 worth of gift,card without doing something tangible and nobody is really giving free money on the internet except it is through airdrops.
This made me to remember some time ago when i wanted to venture into CPA marketing and after watching some videos on YouTube i went to YouTube to promote my link but i was restricted. This is not the best way to do CPA marketing and become very successful on it because you must put in a lot of work and invest a reasonable amount of money or carrying out ads on some platforms if you really want to be successful on it.
You must try as much as possible to get a very good landing page if you really want to become successful or if possible it is important you have your own website which will be dedicated to promoting CPA offers. CPA marketing is quite very interesting and lucrative if you can do them the right way. If you continue to do CPA marketing this way, you cannot really succeed on it.