Ranked bug

I've been demoted from s1 to s2 without a warning. Within the link I have provided and within the atrticle under the heading "Promotion and Series" there is this text:HOW DOES SHIELDING WORK? "Temporary shields will stop players from dropping into a lower tier immediately after promotion. You will be shielded from demotion for the next 3 games after you advance a division. If you advance a tier, you will be shielded for 10 games (3 games for Master Tier). Furthermore, if you are in danger of being demoted to a lower tier, you will receive a warning in your Summoner Profile." I did not receive any warning like the article said. Is there anyways to get my status reinstated?