Fail to Receive Rewards of Tasks after the recent Hot Update

Due to this update on tasks. Many tasks became easier to complete. Then I find the equipment and guns I should unlocked do not unlocked. It told me that I should complete the task to unlocked it.  (For Example TASK: Assault 1)  However, I have finish the task through this hot update. So that now I cannot complete some specical task due to this situation.