No account associated- When logging back into headset with code.

I turned on my headset and came so a screen saying I was logged out. It then told me to pull up meta.com/device on my phone and type in a code. After typing in that code, I was then told to put my email in. I put the email in- It told me there was no account associated with my email. I’ve logged into the app with the email I typed in, i’ve checked for spelling errors, etc. I’m not sure what to do, I can’t find a way to fix it— :’(