Hi @pao350034180,
Just to better understand the issue, could you let me know what you mean by "remote connection"? Are you working on Illustrator on the web, or are you using the desktop app?
It would also help if you could share the version of Illustrator you're using along with your operating system details. And if possible, could you upload a short screen recording or some screenshots showing what happens when you try to change shades or switch between outline and fill? That’ll help us look into this more accurately.
Looking forward to your update!
Abhishek