Invited to the Blue Premier League The "Blue Premier League" campaign was designed based on this value; The place where you invited friends, beyond a simple introduction, becomes an opportunity for competition, excitement and winning prizes. In this league, every successful invitation is a step closer to the championship, and friends can be part of its success. The Blue Premier League will be held from November 16 to 21, for 15 days, and Blue users can invite their friends to Blue or Blue Junior with their invitation code and enter the competition after their friends successfully complete the account opening process. - Link.