Help. Can't hyperlink to my site from FB on Android FB app. How can I fix this?

[AC Question]

Help. Can't hyperlink to my site from FB on Android FB app

Hi there, I'm seeking someone who can help me with this.
I can't link to my site via a hyperlink from FB using the Android native app for FB.
I can open other sites that are linked to from FB on FB Android.

Any reason this is happening?

Omar