@杰瑞001 Hello - Sorry, I'm not able to read your screenshots. Just to confirm are you reaching out as an IT admin for an enterprise customer? My understanding is that Azure AD sign-in and Sync support in MS Edge for Linux is still being worked on.
If you are a consumer, I believe sync for Linux should be working. If you are having an issue, you can report the issue and submit diagnostic data through the browser? ("..." menu > Help and feedback > Send feedback) or you can contact Support. https://microsoftedgesupport.microsoft.com/hc/en-us They should be able to gather logs and help investigate your specific case. Thanks!
-Kelly
