When you'll see a message saying your account is disabled when you try to log in means your Facebook account has been disabled. If you don't receive such message then it might be having login issues. You can also try sending an email to [disabled@facebook.com] to ask why your account was disabled, as well as explaining that you are willing to remove any offending content in order to get your account reinstated. This link Guides you to fix all issues related to your Facebook account disabled.
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