Menu bar icon disappeared

The LumaSpace star icon should always be in your menu bar (top-right of your screen) when the app is running. If it's gone:

Check if LumaSpace is actually running

Open Activity Monitor (Spotlight > type "Activity Monitor") and search for "LumaSpace". If it's not listed, the app isn't running. Open it from Applications.

Menu bar is too crowded

macOS hides menu bar icons when there's not enough space, especially on MacBooks with a notch. The icons behind the notch become invisible.

Try quitting a few other menu bar apps (like Bartender, Hidden Bar, iStat Menus, etc.) and see if the LumaSpace icon appears.

Quick fix

Quit LumaSpace completely (if running, find it in Activity Monitor and force quit). Then reopen it. The icon re-registers on launch.

Using Bartender or Hidden Bar?

These apps hide menu bar icons on purpose. Check their settings to make sure LumaSpace isn't in the hidden section.