Changing Help Server Location

NAV 2016 CU 11.

Installed complete with help server. The servername instead of the server url was entered during setup.
Now when using web client, it tries to point to access http://servername:49000/HelpTopic?contextType=2... instead of http://www.MyUrl.com:49000/HelpTopic?contextType=2...


Changed the setup in:
C:\ProgramData\Microsoft\Microsoft Dynamics NAV\ClientUserSettings.config
C:\inetpub\wwwroot\DynamicsNAV90\web.config

RTC client points to correct url, but web client keeps using the server name.

Uninstalled Help Server and reinstalled, no luck with allowing me to change the setup through the installer.

Any ideas?