But still having some issue with the logo both on iOS (iPhone and iPad). See attached images for reference.
The logo is not visible on iOS (iPhone) and on iOS (iPad) there is a white image instead og the logo ad it do not switch from white to black (like the web version).
I think it may be down to the ridiculous size image you have used, it’s 6400 x 4600! Please reduce that, ideally max 500px wide. That may sort your issue.
Yes I am. Unable to see on iOS 10 Beta 3, but fine on IOS 9. Can you try my suggestion of reducing the image size? It definitely doesn’t need to be that big, and will only delay load & increase your load times.