That sounds a lot like the issue I am having. I reported it ~2 weeks ago here: Takes much longer to start game on Chess.com - #68 by Caelarius
I had the same issue today. Around 12:55 UTC I booted the board and tried to get a match. I cancelled after 2 minutes. Then around 13:03 UTC I tried again. I did not get a match, cancelled after 2 minutes again. Then, on the board, I logged out of my chess.com account and logged in again through the app. I then closed the app, and started a match again on the board. This time I got a match, but now I got a “connection closed” message after the first move. I then played the match on my tablet.The match ID is: Chess: Caelarius vs checkfate06 - Chess.com
Then later on the day I booted my board again and started a new match. This time without any problems, fully played it on the board.
This problem has been coming and going for me the last 2 to 3 weeks. At certain times the board works just fine. I get a match within seconds, and am able to play it on the board. At other times it takes much longer to get a match, but I still get it. And at times I get no match and have to cancel and try again later. Or I get a match, but the connection gets closed after move one. Just like @JoshJG I don’t see much of a pattern as to when a problem occurs or not.