Here’s how to get it working.
You have to connect alternate accounts first, but once connected you wont have to sign off again.
ClickLog Outto return to the Facebook login page.
From the login page, clickAdd Account.
From the apps login screen, tapLog into another account(just below the gear icon).
ClickRemove Account, then clickRemove Accountto confirm.
In the app, tapMenu>bounce>Log outto return to the login screen.
On Android it’s:Menu>sign off>three-dot menu>Remove account from unit.
Tap thegear icon, then tap the account you want to remove.
TapRemove accountto remove it from your account login options.
Confirm and drop your password to remove your account.
You’ll have to confirm a few things and input your password before the deactivation happens.