Personal account Yii2 / reference, filters

Hello!

Is the MVP-version of the project https://fl-bot.ru
(you can poke - reg there the simplest, even without confirmation of soap)
Written clean code in Yii2.

We need to implement an affiliate program to the user was the link to the profile, copy it to the clipboard and business logic of storing in cookies or session - if you follow the link and have not erased cookies - when you sign up (even if the transition by Ref.the links already passed the time) - it attaches to the referrer as a referral.

Also, list referrals pagination: Email, registration date, Bought a paid account (Yes/no)

The extension of the tariff for 7 days (just pribludova to timestamp in DB) in case of purchase referral a paid subscription.

Wait for specific questions about the project and rough estimates.
Copy-paste is not necessary.

Thank you!