I tried it just now, and cannot reproduce it:
- I started the installer, moved all services to Disabled, Apply.
- Go back to the first page, run an Update Check, when I went back to Config, services are still all Disabled
- Start the installer again, go directly to the Config page, services are still all Disabled
Try this:
Remove this folder:
Addon Manager\MSFS\fsdreamteam-gsx-world-of-jetways-2020_backup
If you have this folder (you shouldn't)
Addon Manager\MSFS\fsdreamteam-gsx-world-of-jetways_backup
Remove this as well.
Enter the installer, run an update, all services will now be Enabled, move them all to Disable and see if they stay.