My boss recently went trough something similar. His profile was locked and he just received a generic email offering no explanation as to why that has happened. He sent them an email asking why he was locked out and received no response. After about 14 days he finally got an email from FB that his account was locked because of an error or something like that.

The saddest part is that now he can't use FB's advertising tools anymore, there is just some text there saying that he is locked out. No explanation. No form he could fill to resolve the issue. No nothing. And he has spent several thousands euros on FB adverts for our products (and was planning on spending even more). I really can't say anything else but what the fuck Facebook?!