My license code stopped working

A code that worked before and now doesn't is almost always one of three things.

The subscription ended. If a renewal payment failed or the subscription was cancelled, the code stops working when the paid period runs out. Check its status and update your card in the subscription portal.

The code was moved too often. Each code allows two machine migrations in any 30-day period. A third locks it. See Can I use DCP Transfer on multiple computers?

The Mac couldn't check in. DCP Transfer confirms your license online from time to time. If the Mac has been offline for a long stretch, or a firewall or VPN blocks the check, the app can reject a valid code. Connect to a normal internet connection and open the app again. If you're travelling for a screening, open DCP Transfer while you still have a reliable connection before you leave.

Getting it unlocked

Email dcp-transfer@cinematiq.com from the address you bought the license with, or include that address and your order number (it starts with CIN). We'll check the account and unlock the code.