Calendar entries not opening

When I try to open a calendar entry nothing happens. The Taskbar shows the window but when I hover over it there is nothing there, when I click on it nothing happens. I am running Windows 11 and eM Client 2.1628 (a307a94)

The window has opened, but is off screen. Hover your mouse over the taskbar icon until the empty thumbnail preview appears. Right-click in the preview and choose MOVE. Use your keyboard arrow keys to bring it back onto your screen.

Fantastic, thank you, that worked great. John