It is not possible to check the progress of ongoing works of 1:1 Pro services.
However, if a translator or proofreader saves their work mid-progress, you will be able to see the progress percentage (10~90%) on the request screen.
Please be informed that you may be able to ask the translator or proofreader of their progress through the chatting service, even while translations or proofreadings are ongoing.
Since sharing personal contact information is prohibited, the chat service is vital for communication between the requester and the translator or proofreader. Please take advantage of this service.