Hey, @throop_photography. Welcome to the Lightroom Community. I'll help you figure this out.
What version of Lightroom & iOS are you working on? Are these your custom presets, or have you downloaded the Preset files from the internet?
If you import DNG presets, you may encounter a "Cannot Load File" error message during the process; however, you can still create a preset based on the edited DNG file. Please head here to learn more: https://adobe.ly/3FbJme4
Thanks! Sameer K
(Type '@' and type my name to mention me when you reply)