Other members are seeing the same problem.
https://www.chess.com/forum/view/general/why-my-add-to-library-button-is-gray
If you open a game from your archive without entering the game review or analysis modes, you'll see the save game button is enabled.
Since few weeks, my add to library button is grayed out.
I am doing something wrong?
I used to simply enter a game in analyze mode, then press review game, then press add game to library.
any ideas?