Hello.
I got Gallium Treasure Keys from Mimics and Tier 1 and Tier 2 Treasure Cache chests. In patch
I have read that these chests can be opened with these keys by characters at level 1-91. My character level 50 uses these chests, but gets only 2 options: "Open without key" and "Don't open".
How to use these Gallium Treasure Keys? How to open these cache chests with Gallium keys?