I completed all 3 of my mssios yesterday yet my ongoing reward has returned to zero and my tasks are showing half finished? what happened?
You need to finish/Claim one mission daily, If you don't do this the daily mission chain will broke.
More info here → http://tankionline.com/en/2016/03/daily-mission-chains-improvements-in-chats-and-more/
Customer support service by UserEcho