Live Chess European League also confirms all these problems exposed by @ThomasJEvans.
There are matches that did not enter in the Live archive of the teams or later entered without the description of the tables (username and results). Only the final score.
We ended the season with some results written as forfeit and with the lack of registration of the performances (on Chessteams.info site) obtained by the players. It was also not possible to control any closed accounts.
In the last week of 2020, it seems that the situation has been resolved and the matches have started to enter in the archive of the teams with the details on the tables.
But it's true. Captains complain that players are migrating to Lichess due to frequent episodes of instability on Chess.com.
Live matches played from ~11th December do not have the match data available to view, including scores and board results. Here are two links to examples, with a screenshot example below:
https://www.chess.com/club/matches/live/team-brazil-live/422437
https://www.chess.com/club/matches/live/team-france/402304
The matches are also not appearing in the teams' archive: https://www.chess.com/clubs/matches/live/team-france
This is affecting the Live Chess World League heavily, as well as multiple other leagues.
I have been in contact with Support about this, but all I am getting is that "the concerned team informed me that this isn't a quick fix" (and to be fair to them, I wouldn't expect them to know anymore about the issue than that). But it's still incredibly frustrating to not be told what exactly the issue is, and what is being done to fix it.
I have two main questions on this issue:
This isn't the first time Live matches have been adversely affected by a bug that, to me, seems like it should have been picked up during testing. Many teams are starting to feel like Live matches just aren't a priority for Chess.com (some of them are saying their players are moving to lichess because of its better stability), and from these continuing issues, I can understand where they are coming from.