The info comes from an XVM team member who said this:
“We started an experiment with disabling the display of statistics in battle for anonymous players.
At the moment, the order is as follows: if our server detects that the player has hidden his nickname, he loses access to the statistics of other players in the battle for the next 12 hours. Then the detection procedure is repeated.
Accordingly, in order to see the statistics of all players again, you need to open your nickname and wait for the access to resume (it will happen automatically).
We will also add relevant notifications in the game and explanations in your account.
The scenario is not final, changes are possible. ”