Hello @Shao, Xiaoting
Please go to ml.azure.com
Login with the credentials you have and go to Workspaces
See if the Workspace under the AI Studio is there and if ou can create a Prompt Flow
Also from AI Studio see if there is a HUB and a Project
From Azure Portal go to visualizer and see if there is a Machine Leraning Workspace there .
From Azure Ai Studio see the connections and check that there is Storage and that the connection is healthy
Waiting for your Input ~
I hope this helps!
Kindly mark the answer as Accepted and Upvote in case it helped!
Regards