Everyone, the post you responded to is nine days old and is not directly related to your problems.
After looking around based on the frequency of your posts, there may have been a network provider that impacted a portion of our community, but I am guessing it is long resolved by now. As always disconnections counts as leaving and will be penalized appropriately. Lost SR from a single penalty is often easily regained within a few games played as it works to realign with your hidden matchmaking rating. Details on the policy behind the leaver penalties can be found here: