How do I attach a fillable pdf to an email?

I just purchased a plan from Adobe.  I created a pdf fillable form for the first time.  I used a pdf file that I created that already was a form that my clients were printing out in order to complete the form.  I want to make this way more user friendly using a fillable form.  However, I can't attach it to my work email .  It says I don't have permission to share it.  I am the owner and administrator.  I am also the owner of the email address.  I checked the security settings and it is set to no security.  I checked the document properties and everything and everyone is allowed.  Why can't I attach it to an email?