bitlocker on surface pro8

Hello, thank you for reaching out to Microsoft Q&A.

Could you please make sure the BitLocker recovery key ID displayed in your account matches the key ID displayed on your Surface device?

If the recovery key ID matches, ensure you type the key correctly. If not, press the Esc key on your keyboard or select 'Skip this drive' at the bottom of the screen to boot your PC into the WinRE.
Select Advanced Options > Command Prompt.

Run the command below to unlock your drive.

manage-bde -unlock <drive> -RecoveryPassword recoverykey

Replace <Recovery key> with your 48-digit BitLocker recovery key.

For example -

manage-bde -unlock C: -RecoveryPassword 123456-123456-123456-123456-123456-123456-123456-123456

If the recovery key you entered is accepted, turn off the BitLocker encryption by running the command below.

manage-bde -off C:

Let me know if you still need more help.

thank you very much, I realized that the key ID doesn't match, so no way

ciao