I cannot export/print (only one empty page is created by application) survey in my Zoho Survey application

I cannot export/print (only one empty page is created by application) survey in my Zoho Survey application

Hi, 
I noticed a couple of issues with Zoho Survey application. 

1. Having tried to activate “Print survey” or “Export as PDF” function of “Advanced Options" in “Edit" mode for particular survey, there was only one empty page generated.
2.  Having tried to activate “Invite Reviewer” function of “Advanced Options" in “Edit" mode for particular survey, there was a link attached to the message with no survey visible  (empty html page) for reviewer who followed the link.

Please Suggest.
Kind Regards
Eugene