Hello,
A “group” is a collection of one or more images posted at the same time. On your iOS device you can select a bunch of images and share them to the photostream all at once. This is a group, and the iCloud (the photostream) organizes these into a group all with one caption and description. The plugin uses the first image in the group to pull data from since the caption, description, date, etc, are all the same. Even if you just share one photo it’s a group of one photo (so it can treat single and groups the same, code wise).
Also, the image date is already available, see: this screenshot, you’ll notice “image->date(format)” in the list, and format takes you here where you can learn how to format the date however you want.
Question: When you first started using the plugin did you create a new stream for it and share a bunch of stuff all at once? This seems probably (and quite reasonable.) I went back and forth on whether the batch date should be used or the image date… there are up and down sides to both… I’m wondering if the downside here outweighs the upside.