Hello
If you follow the above customization documentation then the setup will be done properly.
NO problem if you get the error in the setup then share your teamviewer id and password, I am trying to setup the ionic in your system don't worry about this.
Also if you do not want to customize the app by your own then just create a customization request here:
https://wplms.io/forums/forum/app-customisation/
Share the details in private reply.