Ok, I will do that! Thank you for a quick response!
Server status

Games not loading today for me
This should be resolved soon if it isn't already for you.

https://www.chess.com/forum/view/help-support/why-cant-i-play-games-anymore-without-this-happening#last_comment

I have been getting server overload or "it is taking us longer than usual to connect" lately. Perhaps it is time to increase the server capacity @chess.com?

I can get into games on web again.
yes, it looks fine now... it seems this problems usualy last under 1 hour like seen here https://downforeveryoneorjustme.com/chesscom
I was just told I lost connection, and thereby lost to my opponent in his or her last minute. Why would I have "abandoned"? And it was over in a few seconds. I had also "lost the connection" before, in the same game. Then I "was out" for a longer time. My connection otherwise, is fine, it seems.
You might check out the following.
https://support.chess.com/article/4720-online-chess-performance-optimizations
https://support.chess.com/article/213-how-do-i-fix-my-disconnect-lag-issues