just start a new game (once you have finished all the other content) and there will pop up 3 options, choose the one that says "new content" or something like that, and you should be able to play the content of the latest update. there has been more than just one update since 2024 of course and i don't really know if you'll be able to play it when selecting the "new content" option and if you can't maybe try starting a new game from scratch and see if you can get all the gameplay you've missed.