[2022] DLC Subscription missing Origins Pack

Origins is included in the subscription - and as pointed out above: You being on 1.31.4 seems to be the issue (1.32 is needed to start Origins). Make sure that you haven't manually opted in to the 1.31.4 version (EU4 -> Properties -> Betas -> Make sure you have 'none' in the dropdown list, in Steam).

If that's not the problem you can try verifying the integrity of your game files (same steps as above, but 'Local Files' and 'verify...' instead of 'Betas').

If the problem persists - please submit a ticket through support.paradoxplaza.com for further assistance.