Unable to post multiple image/videos to instagram from the scheduler

When exporting a project that has multiple images and/or videos from adobe express to the scheduler, it shows you the warning that you will have to download all the media and then upload in scheduler.

This is fine, I've done this. However the export only gives you the option to save as all images or all videos which is useless if you have some slides as animation and some as images.

Then when you schedule the post for Instagram, the scheduler says that posts with multiple images/videos have to be uploaded via the mobile up. Again this is fine in theory.

So when the time comes I receive the notification to post from adobe express on my iPhone, I follow the instructions, it auto opens instagram but it only puts the first media in there.

The first media in my multi-media post is a video, so instagram sees it as either a "story" or "feed". The recent update of Instagram handles videos more like reels than traditional posts, so maybe that's why it's not accepting the multi image post?

This pretty much renders the scheduler useless to me as the majority of my posts will be short video/animations and have multiple pics/vids to the post.

Anyone had this problem or have a solution?