There is a button at the bottom of email. You must click it and it will redirect you to the settings of your account on Facebook. Then you should save the changes.
Nevertheless, it doesn't help sometimes. In case it happens, you need to mark Facebook's letters as a spam.
Answers & Comments
There is a button at the bottom of email. You must click it and it will redirect you to the settings of your account on Facebook. Then you should save the changes.
Nevertheless, it doesn't help sometimes. In case it happens, you need to mark Facebook's letters as a spam.