It used to work, but doesn't any more

I hate to leave a 1-star review, but I have been completely stymied trying to contribute to the forum. I have found a thread there about how a Word Press update basically fried the plug-in. I may have even found instructions on what to do about it, but if so I couldn’t make them work. After fooling around for a couple of months, I still cannot get ads to display on my sites at all. A once good plugin has now become worthless. I would welcome some help from the developer and will gladly write a better review once I can get ads to display again.