I have experienced issues with the keyboard shortcut not working. Try right clicking on the FEN of PGN and clicking "Copy." That should work.
Can't Copy FEN or PGN

I have experienced issues with the keyboard shortcut not working. Try right clicking on the FEN of PGN and clicking "Copy." That should work.
It worked, thank you very much

Have you tried CTRL + C for copy and CTRL + V for paste yet?
Maybe that would help if you did it manually. CTRL + A selects all too

yes, with ctrl+c and ctrl+v it should work or rightclick and then "copy". Similar on the mobile app but pushing longer to obtain the copy feature.
You can verify the copy by pasting (ctrl+v) into a notepad e.g.
Otherwise try copying from another page or anywhere and see if this works by pasting into notepad or an editor. If this is still a problem, log off and on again and try again
I hope this helps
In a board, such as
If I click on the share feature, and then go to copy the PGN or FEN, copying it does not work.
Is anyone else having this problem?