I have a solution for anyone who wants to use vortex to install morrowind rebirth, follow these instructions.
1. Download morrowind manually
2 Use the program 7zip or equivalent to open archive
3. open the morrowind rebirht data files in your 7zip archive
4. create 2 new files on your desktop or documents, name them "Morrowind rebirth esp's" and "Morrowind rebirth Data files"
5. copy the esps to the "Morrowind rebirth esp's" file and copy the regular files (mesh, texture, ext.) to the "Morrowind rebirth Data files" file
6. left click on both of these new files and use 7zip to compress the files.
7. open vortex and go to the mod page, then drop both of the compressed zip files into the drop box.
8. Deploy mods.
9. be sure to go to the load order page in vortex and check mark all the esp files. there should be 6 of them labeled skills, tools, birthsigns, mercenaries, game settings and main.
I find installing morrowind rebirth this way rather then just copying them directly into the gmae is less messy and results in less bugs and missing meshes.