Having the same issue here, universal installer mentioned "EXTRACTING GSX Pro .ZIP archive in K:\Addon Manager\MSFS\fsdreamteam-gsx-pro ERROR Bad state (incomplete dynamic bit lengths tree)". I tried to reach out to those zip files, and windows says those files were corrupted.
I'm guessing that is one of the reasons ppl don't get the fsdreamteam-gsx-world-jetways folder. The installer doesn't get downloaded properly from the server.
And then I tried to download it myself from the link that showed in the universal installer, downloaded zip.001 to zip.005 files, and they can be uncompressed easily, but doesn't contain the world jetways folder.
Hope admin can get us some info here.