If image you open is single, there will be no arrows (arrows show up only for galleries, where you have a set of images to navigate between)
All icons disappear after a short period of time, after opening – if you click somehere on screen they should show up again.
How to Get Support
After you register and login to the site, you may post all plugin support questions in the Support Forum.
If you need to provide private info, please create a ticket and then reply to it using Set as private reply option.