The retirement of ArcGIS AppStudio is coming up on March 1st, 2025.
After this date, the product will no longer be supported. Developer edition licenses will be taken away from all accounts, which means you won't be able to use the cloud make servers to make apps. While you can still work on your apps with Esri's help until the retirement date, we strongly suggest you start or continue moving your apps now for a smooth transition. It's important to plan ahead and act early to avoid any disruptions in your app development process.
Find more information to ensure a smooth transition here