For those who need a working version of Bagnon, here’s one that works on live servers.
Those familiar with Bagnon know that it offers some unique features currently unavailable through the default UI.
Bagnon merges all bank bags into one, displays all your characters’ inventories and when you mouse over items, it shows how many characters have it.
Reddit user Arsuriel shared a Google Drive link for a Bagnon version which works with Patch 10.0.2.
If you have an old version, don’t forget to delete it from the Addons folder.