Can I pause or delete an active campaign?

Sure. If you want to pause your campaign, just click on PAUSE in the campaign card. adMooH campaign system is realtime, so after you click on PAUSE, immediately all screens selected inside will stop, and you will stop spending your money. When you click on PLAY, your campaign returns to the original state.. playing. 

If you decide to delete your campaign, and create another, you can do that.