Guild Stash not accepting seige items.
Go to WvW, doubleclick the types that are giving you issues, then put them back into your pockets (skill 2) without placing them down.
It’s because there needs to be a “new” type of tradeable blueprint in your stack to convert the entire thing, and doing the fix I mentioned counts as a new version.
Genesis Theory [GT] (HoD)
Oooooh, thank you! ^^