Cannot cut selected audio within an audio file

So I just downloaded Audacity and want to use it to cut a part of an audio file(.wve)
However after I select the part of the audio I want and do Edit > Remove Special > Trim Audio as the tutorial said
I was unable to select it (the button was grey)
I hope that you can tell me what the problem is ASAP
Thank you

Check that playback is stopped and not just paused (click the “Stop” button).

AudacitySelection

Hi there I am having the same problem. I have the section selected using the selection time but I am unable to cut this section. The stop button is pressed and the loop button is selected but I can not select edit - remove special - split cut.

When I try to split cut I get error split cut requires one or more tracks selected.

Standing by