When there are more than 8 survivors on the server, it is inevitable to have two identical survivors, such as two zoey.

By reading the source file you provided, it can be seen that you used this transmission method:

"OnUser1" "!zoey TeleportToSurvivorPosition zoey_safe 3 -1"

When there are two zoey, !zoey will only point to one of them, while the other will not be transmitted.

To fix this issue, I think you can do the following:
Before the teleportation begins, teleport all players to a safe location:
"OnUser1" "player TeleportToSurvivorPosition zoey_safe 3 -1"

“player" will refer to all players，Be careful not to use '!player', as it only refers to one player and not all of them

After all have been transported to a safe location, proceed with the subsequent transmission