So, I finished a session last night, and I ended up having some trouble trying to add certain weapons and items to my player's inventory. One of these weapons was the Weapon of Certain Death, Dagger, and the other was the Infiltrator's Key. I own the books that have these items, and I can access them on my own with no issue, same goes for my own characters. Content sharing is on, and there doesn't seem to be any content that's been banned. Is there a bug that's making this happen? Or am I missing something?

There are no such official magic items by those names. They are homebrew items. Is homebrew activated for those characters?

They aren't homebrew items, they're part of a Critical Role book (the Explorer's Guide to Wildemount) , but yes, Hombrew is turned on, Critical Role Content is on, literally everything has been turned on trying to fix the problem. The only homebrew items that my players and I have are one's that I've created for the Campaign Setting. The thing is, I have access to these items, but upon attempting to add them to my player's inventory, they don't show at all.

Ahh, I forgot to check the partnered content. My bad.

For the weapon of certain death, you wouldn’t search for “weapon of certain death, dagger,” you would just search for “dagger of certain death.”

For the other one, sometimes search gets screwy if one searches for something with an apostrophe in the name, so just search for “key” and it should come up because there are only 4 magic items with the word key in the name. You will have to select either the Dormant, Awakened, or Exalted version.

Thank you! This has been a great help!