Error in copy and paste in grasshopper

hi , Icant use CTRL+C and CTRL+V in grasshopper in my system! what do I do now?!

Hello sailor!

You can use ‘alt’ + drag to copy things in gh.

Best regards,
Sir Ernest Shackleton

‘Edit | Copy’

Hello guys,
i am also experiencing an issue that ctrl+C or V do not work on my Windows 10 machine. also alt+Drag does nothing. any ideas ?