The resolution path for people unable to transfer due to an issue transferring from their 32-bit to 64-bit world will depend on the nature of the issue. Customer Support is handling as many as they can, and other resolutions are being done by the game team, engineers, or other people whose specialized area of expertise is required to resolve. Some resolution will happen "automatically" once the fix is implemented into a game build, while others will be fixed "automatically" once manual work is done on an individual or perhaps server-wide basis, either on the 32 or 64 bit world, depending on the nature of the issue.
If you have received a message from Customer Support indicating that game team development work is required in order to resolve your issue, the above is what the ticket is talking about. It means you are presumably in one of the piles of outstanding issue that Customer Support cannot directly intervene in to resolve. If your ticket has been placed on some kind of "hold", it is likely because further work will be required before a Customer Support agent can correct the issue and resolve your ticket.
If you received what you believe is an incorrect reply to your customer support ticket, please respond to the ticket if it is open with your concern, or if the ticket is closed, open a new ticket and reference your prior ticket number prior to stating your unaddressed concern.
In the near future we will reopen the 32-bit game worlds as "ghost worlds" where you can log in but not continue questing or engaging in most gameplay. You'll be able to access your storage and such, then pack and transfer. The ETA is not yet ready to announce, but we expect these worlds to open as quickly as we can.