Why I still not get my uStamp eventhough I have done the mission?

Maybe that's because you haven't finished your missions yet. You have to finish a mission before it's finished. For example, you have to read articles, listen to podcasts, or read comics until it's completely finished, then your uStamp will automatically increase.

However, if you have completed missions but your uStamp hasn't increased, please contact Nindy via Instagram DM.