Cant open Secret wall in Garden of Eva

Hello. I have tryed everything what I know, and can not open the "secret walls" at Garden of Eva. DAggers used to have "unlock"

(Opens level 1 doors, level 2 doors, and level 3 door at 100 percent probability. Requires 17 Keys of a Thief. Also opens chests.)



But they have it anymore. i have tryed to use maestro`s keys and Thief Keys, but nothing happens -