Presets can be installed directly into Lightroom on iOS/iPadOS or Android.

Open the Presets browser.
Navigate to the “Yours” tab.
Tap the ⋯ button at the top.
Choose Import Presets
Navigate to the “Import Me” Zip file containing the Prolost Presets, and choose it.

To install Prolost Profiles in Lightroom for iOS and/or Android, you install them for Lightroom Desktop, and then they will automatically sync to the mobile versions. This also works for Presets.

Make sure you have the latest version of Lightroom for iOS/iPadOS or Android
For Presets, follow these instructions to install into Lightroom Desktop.
For Profiles, follow these instructions to install into Lightroom Desktop.
Leave Lightroom open on your Mac/PC as the Presets/Profiles sync.
Open Lightroom for iOS/iPadOS or Android, and the Presets/Profiles will sync into place.