I went out and got an item that says (socket} from a mob and got "socket enchantment" diamond through /dd and put them in the furnace as instructed, but nothing happened. No smelting or combined item with lore. I also checked console and it didn't have any errors.

Also, I have drop chance as 100% but I have not had a single emerald or diamond from zombies that were holding them.

Lastly, I also did not get boots from zombies wearing them, as someone else had mentioned

I tested the socket code earlier and it was working for me. Sometimes it is bugged and we'll be working on that.

Zombies haven't dropped emeralds or diamonds for me either, it's a bug I'm looking into.

As mentioned on their issue, boots is a known bug that we're fixing.

Unable to reproduce. Boots are fixed.