Been playing on different servers EU.NA and Asia a few times when laddering on 3 occasions now you win a game but it does not show the upgrade when with stars. Example Silver 7 2 stars you win and does not go to 3 stars but stays on 7 and 2 stars. It happened again on the Asia server 7 platinum 2 stars, I won it did not go up t to he 3 star. It may be the number 7 on each laddering colour its happened around the 7 tier.
I play alot of the lower Ranks and a lot of accounts F2P apart from my main account. There seems to be alot of lag and reconnect problems on certain servers.