Ads ads ads.. untill you pay, and reaction of developer is that they need ads or customers who are paying so they can develop the game. I have a (year)premium account with tanks stars but ZERO development, all tanks upgraded to max level so nothing to play for anymore. Cannot even add Pumkin as new tank. My advise dont play this game, dont pay for it, they only want to grab your money. Asked many times for updates and zero feedback. To developer: take example Brawl Stars, they understand the game industry, nice game, always news things to play for. Tank Stars is dead.