I tried logging into facebook for the first time in my lg g2 and all it says is Sorry, an unexpected error occurred. I've uninstalled and reinstalled, went into broader to log into Facebook from there to access my log in approval codes and now that says Your current Chrome settings might make it hard to use Login Approvals.
It's probably because:
You sometimes clear your cookies.
Your browser is set to automatically clear cookies whenever it closes.
You use your browser's "private browsing" or "incognito" mode.
You're using a new browser.
It may take a few days after fixing these issues before you will be able to enable Login Approvals. You also may need to log out and then log in again after fixing these settings for the changes to take effect.
Visit the Help Center for step-by-step directions on how to fix these settings.
I've fixed my settings button can't log in.