Inneractive code in my app - not working on click

[abanowBUSTfGf]

I have inserted the following code into my app in the stack script:
==========================================================================
on openstack
mobileAdRegister "TeachingKidsnewThings"
local tDetails
-- See the dictionary for more metadata entries
put "30" into tDetails["refresh"] -- The advert refresh interval in seconds
put 25 into tDetails["age"] -- The age of the target audience
put "female" into tDetails["gender"] -- The expected gender of the target audience
mobileAdCreate "myAd1", "banner", (0,0), tDetails
set the height of "banner" to the height of this card
set the width of "banner" to width of this card
end openstack
===========================================================================

It works fine but
a) the package does not run at all outside Wifi range
b) when in Wifi range, if I click on the ad it goes nowhere - all I get is a blank screen
Any ideas?