A star alongside the photo, makes the call to this page where

How can you earn stars
How can you buy stars, worth 1 cent (0.01 euro)

How to swap stars between users (manage the transaction.. See costs)

The stars will serve the user to manage "increase time" and "usage number" of generated queues

In addition to the management of the purchase of Ver. Pro, vanity code and additional queues in denominations of 3Day/1Week/1Month/1Quarter/1Year
Payable in matured stars or money