Lockpick help

[hotelmaui]

Sorry, I started a Rogue toon and I cant figure out how to open other peoples locked boxes in trade. Help would be greatly apreciated.
I tried right clicking, left clicking, When I click on my lock pick icon the courser glows but i get the note Item cannot be traded.

 

[Generel]

The person needs to open up a trade window, in the bottom of the trade window is a box for "will not be traded".

Your friend puts his locked lockbox in, you click your "pick lock" icon, and then click the box, then click accept

Make sure you are not mounted, jumping, or moving around or you it won't work.

 

[hotelmaui]

Except I’m not getting the "accept" response, only "item cannot be traded????