Why the NotchStar notch does not open
If the NotchStar notch does not open, check these in order: the app is running, Open notch is set to the mode you expect, and the pointer is on the right screen. Most cases are one of the first two.
1. Is it running
Look for the star in the menu bar. If it is not there, open NotchStar from Applications. The star can hide behind the notch on a crowded bar. See hidden menu bar icons.
2. Hover or click
Open Settings, General, and check Open notch. If it says On click, hovering will do nothing. Click the notch instead, or switch back to On hover. Details are in how hover opening works.
3. The right screen
The notch is on the screen that has the notch. With an external display, move the pointer to the top centre of the laptop screen. Without a notch, look for the floating pill. See external displays.
4. A drag in progress
Hovering a screenshot in the strip under the notch, or dragging one, does not open the notch by design. Move the pointer away, then back to the notch itself. The Screenshot Tray explains the strip.
5. Restart
Choose Quit NotchStar from the star menu and open it again. If it opens but a tool is empty, see a tool is blank. If nothing helps, send the details in report a bug.
Is the trial the problem
No. When the trial ends the notch still opens. It shows a buy prompt in the tool area.