When I pre-pay next month's fee, the web give me options like 10, 15, 20, 25... dollars. But my monthly fee is 22, so there is always a surplus. And I hear that the pre-paid money cannot be withdrawn. If this is true, I hope there should be a top-up ...
I have read it before posting. It says "Access the referral dashboard to get your unique link that you can share with your friends." But the dashboard link goes to an empty page -- no relevant content.