Problem/Bug Chestshop

Basically i made a "Donor Shop" and nobody can buy anything. Really have no clue why, its under the spawn, and there seem to be no flags messing this up. If you want to come see for yourself post your IGN and ill show you. If they rightclick, nothing happens. If they left click it will give the message "You can't sell" like it should.

Never mind, fixed. Please lock.
(Fixed literally 10 minutes after i posted this dumb reason on my part).

EDIT by Moderator: merged posts, please use the edit button instead of double posting.