this is not the first time I have had problems with responsive banners on this template - although i a running through socialads now i had the same issues when using the built in banner component a few months ago
i had to renew my subscription to joomlart for that very reason and now the same issue is causing a problem
You say you cannot recreate the banner issue on an iphone, so what you are saying is my iphone out of the xx amount of millions is the only one to show this fault!! dont think so do you!!
this issue needs to resolved asap
you have all the details and are able to login to correct the issue - if you cannot fix the issue just refund my purchase and i will go elsewhere