How to withdraw a task that marked “completed” accidentally?

I just claimed my task and accidentally hit the complete bottom. Is there a way to withdraw?

Hello @Ruihan_Yang
Welcome to the TWB Community!
In this case, only your Project Manager can help you regain access to the task. Check out the thread Finding a TWB Community Thread to Discuss a Task to learn how to contact your Project Manager.
Hope this is of help!

All the best,