Mac Shortkey not working

Hi, I’m using Atom in linux X2Go through Mac.

The problem is that the shortkeys are not working.

For example, if I try to save a file using ctrl s, the system just types ‘s’ instead.

I tried changing the shortkey to cmd s, but it still types s.

May I know how to solve this issue?

It is very inconvenient to manually save and run files.