A while back when you guys changed how you upgrade your turrets and hulls, something went wrong with my Isida turret and it won't let me upgrade to M2 without paying full price for the upgrade even though it shows 50 out of 50 in progress of upgrades completed. I assume this is in error? See attached image below. I can give you PC specifications, but I play Tanki on more than one PC and the same problem is present in all of them. I mostly use Windows 10 and Chrome browser when playing.