Build a website / Integrate Offer Wall platforms

I need a website allowing users to earn coins (currency of the site) filling out surveys and other offers, accessible via platforms like: Offertoro, personaly, Adgate Media, Ascend media ... It will connect the site plateforms for these users receive their coins after confirming offers. With these pieces, they can order items: I have to be able to easily add, with photos. Users must connect with Steam. I would like something like this: [login to view URL] I do not mind if you use a CMS, I just want you to connect with plateforms using the connection with Steam.