Elo dropped because of tech issues
Two or three weeks ago, there was some issue where I was kicked repeatedly from games for failing to complete a turn three times under the 80s time clock when this was not true. Annoying for sure. I figured it was another bug and didn't play for a week only to come back to the game and find my ELO dropped by 50 points. I don't think it affected my karma though.
So now I just ignore whatever my ELO is because it's obviously scoring me on things that are my not my fault. I reached out the Catan on Twitter to no reply. Been playing the game a lot less since then.