There are times when you will need to be able to find your Klei User ID (or KUID) for support or for account linking purposes. To find your Klei User ID (KUID) in Don't Starve Together:
If you are playing on Steam or WeGame: On the game's main menu screen, click on the "Account" button in the lower-left hand side of the screen > when the web browser opens, your Klei User ID will be located in the USER INFO page. Your Klei User ID will look something like this: “KU_xXxXxxxX”.
If you are playing on PlayStation 4, Xbox One, Nintendo Switch: launch Don't Starve Together, and in the game's main menu, go to Options > More > take a picture/screenshot of the screen including your Klei ID. Your Klei User ID will look something like this: “KU_xXxXxxxX”.
If you are playing on Mobile (iOS or Android): launch Don’t Starve Together on your mobile device, and in the game’s main menu, tap on the arrow button to the right-hand side of the screen; this will show more buttons below it. Tap on the Identification ID button/Account Button. When the web browser opens, your Klei User ID will be located in the USER INFO page.
Don’t Starve Together (Mobile - iOS/Android) Support
You will be able to find more in-depth information and support documents for Don’t Starve Together for mobile on Playdigious’ Support Website: https://playdigious.helpshift.com/hc/en/39-don-t-starve-together/
You can also contact the Playdigious team via their Support Page, as well as the official Playdigious Discord server.