Your server is probably not set up right with the mod. Also you can set the spawn dimension to middleearth by default. What type of server are you hosting?
If you want "Inspiration" decomplie the Lotr files with 7zip or winrar. 1 issue is that 1.7.10 is an old version and idk if modding/code is significantly different for modern versions.
Magic and enchantments do exist in the base lore. We could assume since he is kinda immortal that he has magic stuff. Plus enderchests plus shulkers up this by a ton.
Finally it has been too long
What type of server and plugins/mods are you running. Also about how many mobs per chunk?
Mevans to get more coders or take a break. He does a ton
If you didn't back anything up I think you are pretty much screwed
For the launcher there should be a folder in %appdata%. crash-reports.