why rented referral nothing there is no income why rent them

Our rented referral system works just fine.  There is no way to predict who will be an active member and who will not.

We have also implemented an auto-recycle system where the rented referral will automatically be replaced if they have never clicked on an ad.

See our FAQ on it here: https://faucetwave.net/faq#question12

What's the difference between buying refferals and renting them?

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Renting you have to maintain rent on them where as buying you will get to keep them forever.

This was answered already.  See my prior reply.