Client failed in champselect (again and again)

Hi Riot As the title states i just returned to the landing page from champion select after failing to select a champion in time. this has happen a lot lately and i have now lost both my promos to gold II because of it.

But Here's the deal: i had locked in. Another player lock in when the countdown hit 0 and then my client failed - And i got a 6 minute queue dodge timer + lost my promo for the second time - This issue is happening more often lately and its now almost impossible for me to climb.

I dont know how to reproduce this bug, or why it happened. But its extremely frustrating that i get punished for someone else's crime, when i had locked in 10 seconds into champion select.

I do really hope someone out there know have to fix this problem

Sorry for my english