The portal doesn’t update the screen when I have worked in it for a while, problem uploading files, for eg. no message if I want to upload the file to the portal?

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Try to click on the web browser’s  “Refresh” button  or F5. If the log in window appears you have to log in again. 

NOTE! In ProjectCoordinator™ a log out time is by default set to two (2) hours. If you try to upload (save) a file after you have been logged out, your file will be saved locally on your computer in C:\Users\[User]\Appdata\Local\Temp.