Sorry, just saw this, I don’t have Skype and it wouldn’t help me if I did. I’m located way out in the boonies and I’m am limited to DSL. Yeah, it sucks, I’ll get high speed internet here about the same time that cows start watching TV.
You might find this interesting, It’s very hard to figure out what’s going on during an AJAX call, or even if your function is being called, or if it is why it’s not working. I outlined the method I use for getting feedback during AJAX calls in this topic. If you get the upload working the rest of the conversation will help you figure out how to limit the query that shows the images that can be selected. https://support.advancedcustomfields.com/forums/topic/filter-gallery-items/
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