Some zoom shortcuts have stopped working

Hi, Hopefully someone can help me with this. Suddenly some of my Zoom shortcuts have stopped working. Presets 1, 2 3 4 have just stopped. They are still listed in my keyboard shortcuts with the shortcuts I set up, but when I hit the shortcut nothing happens.

Have the presets somehow gotten erased.

Any help would be much appreciated.

Stewart Peters
Sydney, Australia

Toggle Alternative key commands by mistake?