So I won a ranked game a while ago (on PBE), and after clicking "continue", I got stuck at the "loading stats" screen. So I clicked "Skip waiting for stats", and I visited my profile only to find out that my Lp remained untouched. The game is recorded in my match history but I didn't get ANY LP or IP from it. And I also came across a few threads about this issue on live servers too. Like this one: http://boards.na.leagueoflegends.com/en/c/bug-report/MbJtsF9u-didnt-get-lp-for-a-victory
Why is this happening? Maybe ranked queues must be disabled for a while.