For your JPEGS, make sure to test the 90 degrees rotation in Apple Photos prior to using the plugin, and let me know if your files go through. Make sure to also test that the standalone works. Until the standalone works, the plugin will not.
For your HEIC files, were they shot on iOS 18? If so, see this: [HEIC files from iOS 18 Error] - Click here if you get "Cannot load .heic file" error when editing HEIC files - #4 by jo.vo