Hi Torbjorn,
When you installed the receiver did it not ask for a pw? I think it does. I have an EA that ask for a pw to install it but then after it is installed and I look at it properties the log in name and pw no longer show up. As a test can you open up a new trading chart in MT5 and reinstall the receiver and see if it ask for a pw. After the test you can delete the chart.
Alan,