ON MOBILE ONLY | input error: invalid referer. ON MOBILE ONLY not desktop from LOCALHOST?

Hi there.I'm kinda confused. I'm very new at custom reCaptch NON API implementation and my issue I'm having is the image shows up on the desktop but once the site goes mobile (Android in this case) it gives me "INPUT ERROR: Invalid referer." and no image. Has anyone come across this ever ? -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://bit.ly/1dkFnYd. For more options, visit http://bit.ly/P65DvS.