To avoid confusion between the base game and DLC issues, please direct all DLC questions to the DLC page instead. This comment section is mainly for 14DWY concerns.
Furthermore, please make sure to enable the DLC during the character customisation screen. If you're not able to, then that likely means you haven't installed the DLC correctly. I'm happy to help you further if you'd like to leave a comment on the DLC page instead of here.