During the last 2 months we collaborated with SmartThings to get the integration up and running again. No more need to request a personal access token! You can just sign in using your Samsung account (like how you are used to with for example OneDrive). Another improvement we have done is that to get push updates, you don’t need to expose your instance to the internet anymore!
Home Assistant Beta 2025.3 was just announced and includes the updated SmartThings integration. That should put it on track for a full release in a week or so.