I just recently got my enchanting to 100, but the game does not give me an option to put two enchants on any item. I have a full set of legendary daedric armor and I want to put a second enchant on them to become God of Skyrim, but the game won't let me. Anyone else have this issue or know how to solve it?

Did you take the perk?

You can't add a second enchantment to items that are already enchanted, the only chance you get to do this is when you first enchant an item it will give you the option to choose 2 effects with 1 soul gem.

I haven't enchanted anything yet. But once I do can it be changed or upgraded or is the item stuck with its initial enchantment?

Its stuck, if you only choose 1 enchantment then it stays what way until you get a new empty item,

one an item gets an enchtantment (ONE or TWO does not matter here) it is forever blocked from the entchant table list of usable items. to make use of double spell you need unenchantend items.

Yes, I have the perk. My Daedric gloves were unenchanted actually, and after I enchanted them, it was still removed from the list of items. What gives?

Okay, I guess you have to select two enchantments and then enchant them. That svcks, it means I have to remake 3 of the Daedric set items. Booo.