First, Plexamp is a music player that works on Windows, macOS, and Linux; there is no Plexamp for iOS.
Plexamp running on any of those platforms should work with Tidal already.
The Plex app for iOS also integrates with Tidal.
If you’re having issues using Plexamp, please post which OS you have it installed on and we’ll get your thread moved to the right forum section.
If you’re having issues using Plex+Tidal on an iOS device, that’s something else entirely.
