Starting a browser with zak credentials will be redirected to the login page

When I start a meeting with my browser, I am redirected to the login page although my meeting link has already carried the user’s zak credentials.

My link to start a meeting: Sign In | Zoom

My zak is from:

Strangely enough, some users can start the meeting directly with this meeting link, but some others have to login first before joining the meeting successfully with the same meeting link.