Go to the key recovery thing and enter the email you used for that key.
I have 2 different keys.How can I find the one I'm using right now?
If you used the same email for each key then I think it shows all of them.
Enter the first 5 letters of the key here: http://blocklandcloud.com/tools/keyidconverter.phpThen give him the one that isn't linked to your blid.
What is that thing for?