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?

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.