I tried to do something with this and this is what I did:
I reinstalled whole server and it worked.
I installed default 1.12.2 Forge from my hosting panel and it installed version 2655 and it worked
I uploaded Baubles and restarted server and it worked
I uploaded Thaumcraft and it demands 2705 version and server is not working
I uploaded Forge 2705 jar file to server and changed config to run it instead of 2655, I checked everything twice, file name is fine and it doesnt work with the same result as in the first post.