I just reached on last lesson no 475 but further lessons did not appeared. please advise how can I go ahead

hello...even I have finished the advanced lessens up to the lessen 475...there's no more lessons to do...Now, What should I focus on to get more coins in order to improve my rank globally?

Hi Ghulam. We are working on the lessons after 475 and we will keep you updated as soon as they are launched.