S3 Omeka S Module Help


I am testing Omeka S with S3 and/or Google Drive for Education. I hoped I could get S3 working relatively easily using either the AnyCloud or S3 module. With S3 I have it working in the sense that if I upload an image in Omeka it now uploads to my S3 bucket. But it is not displaying the image file in the item page, either in UV or as a media file - both are blank. My Omeka site is hosted separately so I am not sure if I need to do further tweaking beyond the basic module configuration to get the display working. From looking on here and in documentation I can’t find any pointers so any help greatly appreciated!