Well, there is no error, in fact, nothing shows up.
So, for example, on the iPhone, when I use Chrome browser, when I click “Featured Image” button, then the “take image” or “Choose from gallery” options show up.
However, on the same phone, when I use Safari browser, simply nothing happens as if the button does not work.
After Enter the user name and password field when I had clicked Login button nothing works for me. At lest it should go to redirect to post form. Can you check that issue? After then I can check the image upload issue.