Pay with a Like not working through mobile facebook app browser

Hi there,

I am using Pay with a like to hide a .pdf link and some text on a page which seems to be working fine on most browsers without any issues.

However, when i share the page on facebook and you access the link via mobile device (iOS Facebook app) it has the [like] button appear and not change no matter how much you click on it. - I have had to add a note telling users to reopen the page in their mobile browser to view the content.

Can we get a fix on this please!

Thank you,
Kris Carne