In order to print/save a document in Maple to PDF, a printer must be installed.
This can be done from https://WEBPRINT.hasseris-gym.dk (log in with Unilogin)
Select "Install printer" in the middle of the page -> "Download package" -> install downloaded program.
The first time you print you will be asked for a user/password - here you must use your Unilogin + code
Now you can print / save as PDF in Maple.