Just so you know, a double restart may be necessary.
For me it was.
Started the update for the ROCK from the iPhone remote, it rebooted normally
Then I updated in this order: 1. iPhone remote, 2. macOS remote, 3. iPad remote.
Looked in the iPhone, iPad, and macOS remotes: No SPLs to be seen
Restarted ROCK and the macOS remote again.
→ macOS now showed SPL option, and so did iPhone and iPad without restarting the apps, so I guess it was the ROCK’s double restart that was necessary.
ARC, even after many reboots of the server and ARC itself, does not show the option “new smart playlist”, but see those created on the server. Is this an expected behavior?