Easy and Useful but a suggestion

Somehow it gives a feeling for being a very flexible plugin. The menu and options are pretty clear and it doesn’t put any additional load on your site. I would have given it five stars but the reason is the absence of an important option. Sometimes you need to put the different sizes of banners on the same position based upon some conditional desktop and mobile devices selection. In such a scenario, it does not help. There should be a way to select inside an Ad if it has to be placed on desktop or mobile device or both. Also, if the paid version is active, it should replace the free version without a need to show two plugins installed separately.
I hope the developer look into it.