"That advertising was created in Germany" - why not?
It seems to work for "this", so why not for "that"?
"This advertising was created and produced by Pepsy's 'in-house' agency"
"This advertising was created and produced by 20Fifteen"
advert not accepted why?
"advert" is an accepted option, it should have work. Perhaps you made a typo somewhere and the algorithm corrected you to the starred answer, which uses "advertisement".
The result was already written
A screenshot would be helpful, if you encounter the problem again.