Cannot Create a business Page for Charity

You can't create a separate “business account” for a charity. Facebook wants you to use your own personal profile and then create a Page from there.

Log into your normal account go to Menu → Pages → Create new Page, name it after the charity, and choose “Nonprofit organisation” (or whatever) as a category.

If it refuses, check your account status for restrictions and make sure your profile is fully verified (real name, confirmed email/phone, age and country).