Hi Annemarie, I'm sorry to hear about the trouble you're facing, I will be happy to assist in the best way I can.
The BitLocker only contains numbers, if it includes a letter then it is not your BitLocker recovery key.
There are 5 ways to find your BitLocker key.
- In your Microsoft account
- On a printout
- On a USB flash drive
- In a work or school account
- Held by your system administrator
If you are unable to locate the BitLocker recovery key and can't revert any configuration change that might have caused it to be required, you’ll need to reset your device using one of the Windows recovery options. Resetting your device will remove all of your files.
Microsoft support is unable to provide or recreate, a lost BitLocker recovery key.
For reference to the instructions provided. You may check this link. https://support.microsoft.com/windows/6b71ad27-0b89-ea08-f143-056f5ab347d6
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