Install and launch Uma Musume on Steam
Complete the initial setup until you reach the title screen or main menu
Open the in-game menu
Select the account transfer or data link option
Choose the option to link an existing account
Log in with the account used for Uma Musume on another device or platform
Confirm the transfer or link prompt
Verify that your game data, characters, and progress appear correctly
Keep the linked account credentials saved for future access
If the option is unavailable, update the game and try again