Hi — billing is active and a default card is set. We can search and select Twilio numbers, but after clicking Save the number is not retained and disappears from the workspace. This looks like the Twilio sub-account is not fully attached to this Retell workspace. Please finalize / reattach Twilio provisioning so phone numbers can be purchased and persist. Workspace: jk@libertybusinessautomation.com Carrier: Twilio Region: US (480 local)