Ok I lead my alliance and in more than one occasion have completed advertisers offers for gems and they have not come through. Even worse the support is know as being one of the worst for a game. Often with people that done speak English. I wanted to spend hard money on the gummy offer ad but did not trust the game maker to give me the offer as they have argued in the past when I have supplied proof. When the trust of me spending my own money is me having to prove I have spent cash then you have a major problem I no longer trust the offers in ads to deliver there promise of gems.