Done. Started a NEW series ad (Georgia Davis) and added a new adset to my historicals with new creative... do I need to do that or can I just change the creative on the existing ad/ad set?

I cant seem to find the 3 sizes FB likes so I can add a 9 x 16 image. It came up originally, but now it doesn't. Where is that elusive thingie?

It shows my CPR has increased 21% in the last week. Does that mean I need to shut my ad off or change something in my ad?

My book features an iPod that the main character uses at the beginning. I thought about creating graphics for social media and possible ads to highlight the release of the audiobook. Am I allowed showing the iPod in an ads & social media or does it have to be a generic MP3? What if it's a vector image that has the shape of an iPod without actually being an iPod?

I've seen a few people elsewhere mention that they are shifting to a 4:5 format instead of 4:4 for their Facebook ads. Has anyone else had success with changing to a 4:5 format?