where is that

We don't know. All we know so far is that we all have:
1. atleast 20 of these https://docs.google.com/document/d/1u2c7DgmyWkaddfIfzYtseCDAJf6feMD_CSMfTb3FMVw/preview
2. had 4 players in the lobby
3. the painting started to glow when one person left. we don't know why when he left because we saw screens of 4 people there. he couldn't rejoin, invites were disabled after the vault.
4. the 3 of us who were in the lobby did not trigger loud, the leaver did.

How?