I've been getting this problem often since Season Six launched, and I've *finally* been able to get Steam to cooperate and let me take the needed screenshots.
There are times that I'm able to stay on for a fair amount of time, and times that when I log on, I'm immediately disconnected...
Screenshots as follows:
http://cloud.steampowered.com/ugc/578962749276208694/80EBBB3AAC25FE52475DFF2383BC2C83B6DB30F2/http://cloud.steampowered.com/ugc/578962749276207177/D282E7C7B93B863A7261273BCF41F5DEC2E66A5C/http://cloud.steampowered.com/ugc/578962749276204527/301E34C197309A20E83D5E775F74F0E91C611F92/
The fact that it's so inconsistent, and that it chooses to disconnect when I'm in the middle of something important, has cost me SO many rewards...