There are just asking people to stop requesting "loli's", and with a good reason.
To any 3rd party looking at their facebook, people are asking them on official public chanel to provide child porn.
To a common person, word "loli" is synonym to "child porn". If course they dont want anything to do with that.

As for their payment processing company, you wont find better then "epoch" for this kind of content. But as every company, they have to respect the law and dont want to have anything to do with anything controversial.