The Windows Mobile client is really easy to use, you will see the following screen after the installation:

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As soon you have downloaded the app an username and password will be assigned to you, tap on “How To Configure” option and follow the instructions. Windows Mobile doesn’t allow an app to make the automatic configuration, so the first time you have to fill it manually.
If the connection fails, you may have to open the firewall ports on your local network. More details in our
support wiki.