Hello Isaiah, thanks for posting this in our community.
You might want to try accessing your BitLocker recovery key directly instead of going through the account dashboard. Use this link: https://account.microsoft.com/devices/recoverykey. If it still logs you out, that’s a strong sign there’s a deeper issue with your account session.
Also, double-check that you're signing in with the correct account type. If you're using a personal Microsoft account, make sure you're not accidentally signing in with a work or school account. Microsoft sometimes logs users out when there's a conflict between account types. Try signing in using an InPrivate or Incognito browser window at https://account.microsoft.com, and use the exact email address you used to set up BitLocker. If you're prompted to choose between “Work or School” and “Personal,” go with Personal.
Kind regards,
John Oli