I am rated 1700+. In the last day I have been matched for games with a 400, 200 and 1100.
I have never been paired for a game with such low rated players before.
Switch the matching algo back as there is no point playing players who have a rating so far from you that no matter how well you play you can gain 0 rating points.
Check your settings.
https://support.chess.com/en/articles/8598433-how-do-i-choose-what-rating-my-opponents-are
It's possible something got reset
I am rated 1700+. In the last day I have been matched for games with a 400, 200 and 1100.
I have never been paired for a game with such low rated players before.
Switch the matching algo back as there is no point playing players who have a rating so far from you that no matter how well you play you can gain 0 rating points.