My ionic real app not working in real devices

hi everyone.
I have a problem with ionic app, not working well, well exactly not working the window facebook login, but in my browser (ionic serve) the facebook login working percfectly.
like this
when I click en login with facebook button, show me a popup window to login.

but when a try in my device, well in my emulator not working and it has ignored the style “css”
like this

first, it has ignored style css,
second, whe I click in login with facebook button not show me a popup window, the popup is part of api facebook

whe I use command (ionic build android and next ionic run andriod) not show me, no mistakes.

I need install a plugin?

I following this link ( and working well in my localhost, but when I try this ionic app in emulator not working.

please help me.