Hello, Ahmed Bakri 351998
Welcome to the Microsoft Community.
Hello, thank you for your feedback.
At the same time, since copilot and Microsoft community are two different departments, you can feedback your situation to the copilot development team at the same time. You can refer to the screenshot below for feedback.
At the same time, I also conducted some research and found that the file upload function cannot be used with the personal version of copilot, but it can be used after I switch to a business account. Can you check if you are using a business account? You can Make the switch.
Best regards
Bobhe | Microsoft Community Support Specialist