If your Facebook account is locked and won't unlock even with a code, you can try the following solutions:
1. Visit Facebook's Help Center:
Visit Facebook's Help Center for information about "Account Locked" or "Account Recovery."
You may be guided to unlock the account from here.
2. Identity Verification:
Facebook sometimes asks for ID proof to unlock your account. If you haven't unlocked with a code before, Facebook may give you the option to upload a valid document (such as a PAN card, Aadhaar card, etc.) to prove your identity.
You must upload a clear and accurate version of your document in the photo.
3. Contact Facebook Support:
If the steps above don't resolve the issue, you can contact Facebook Support. They have a "Help" or "Support" option where you can provide detailed information about your issue.
They can take appropriate steps to reactivate your account.
4. Use email:
Facebook may send you a link to your email to unlock your account. Make sure you enter the correct email and phone number.
5. Some time delay in the system:
Sometimes Facebook has a system issue and automatically unlocks your account after a while. If the problem isn't immediate, try again later.
If all these solutions don't work, the best way to contact Facebook is to visit their Help Center and provide a detailed description of the problem and get assistance from them.