Adblock have to be deactivate from your browser settings.
No,you don't need to invest in order to get paid.
Yes, you do have to click 4 advertisement in order to earn from your referrals the next day.
The minimum payout for Paypal is $2 first time then $5. In order to receive your payment request it can take up to 14 days.
You can have unlimited direct referrals even as a standard member.
If you have AutoPay enabled, on the first click a referral makes per day, you'll pay to keep that referral for an extra day.
If the referral does not click, you won't pay him for another day.
In order to find your referral link you have to go to (My account) and then on the left menu click on "Banners".There you will find everything you need in order to promote your referral link and get direct referrals.
Referral cost vary between 0.21 to 0.28, Autopay cost from 0.005 to 0.0062.
Starting price $0.21