I really want to exchange EOS the same way. It is on the website. When will it be added?
Hello!
We will add NEM smart contract next and a little later EOS will be added too!
great! Can I still buy tokens?
and you can also invite friends to get bonuses

Invite to the portal? How will I get bonuses?
3% from your friends purchases with your link)
Yep, youre are totally right! There are two different levels of referrals. The 2nd(your friend) and 3rd referrals level (friend's friends). You will get 3% from friend purchases and earn 3% from those 3% if a friend's friend makes a purchase!
You can find a referral link in your account! Enjoy 😉