You need to use BindToClose when using DataStoreService

[sjr04 (uep)]

I have a tutorial explaining this. Here is an excerpt:

@sjr04

This could fail in certain circumstances. When a server is in the process of shutting down, its priority is shutting down and stops doing anything else.

The 3 ways that come to mind are these (do give me more if there are):

• The last player leaves
• The developer manually shut them down via the game page
• A network error is encountered and the server is forced to shut down

In these cases, the PlayerRemoving event listener is never called or doesn’t finis