Board Thread:Questions and Answers/@comment-25660508-20141224075246/@comment-25956839-20151004084952

FM know of this problem, they posted on their FB page:

"We identified a technical issue with the in-game Ad system, which prevented a number of players from being able to play the game. As a precaution, we have temporarily disabled some in-game advertisements, including the Free Gold offers.

These offers will return as soon as the Team is confident that the issue is resolved."