My redemption code isn’t working. What should I do? Joyce H September 16, 2021 08:52 Updated Follow First, please double check if you typed in the redemption code correctly. If it still doesn’t work, please submit a ticket to us. Related articles How to get the redeem code to visit CAT ART Online Exhibition? Contact us User Manual for CAT ART Online Exhibition How to contact Ticket window customer service? Unable to get the Redeem Code from Email or My Redeem Page? Comments 0 comments Please sign in to leave a comment.