Develop a referral system on the site

For an advertising site, a referral system must be developed. The site on Jumla.

You need to create a separate page called “referrals” on which an individual ref is placed. The link that invites people to the project and receives 50% of the paid ad.

- Text box. Make it possible to edit a certain text by admin through the admin (the main page is editable, probably do the same);

- statistics: "Registered at the link - 128 people.", "Payed the announcement - 8 people."

In general, the main idea and functionality of the ref. The system is:
The user puts an ad and has the right to invite referrals by ref. any number of links, but after 10 invited users paid for the ad, and the inviter earned from each 50% (100 rubles), he can no longer earn from referrals. If you want to earn more money with more than ten users (find 10 more active paying advertisers), you need to create and pay for the ad again. I mean. Ref. system, only with restrictions, earned with 10 people, all the lock and do not earn, if you want to earn more, then create and pay for the ad.