When mistakenly checking a task as done, it's not easy to revert it back: you need go to completed list and find one of dozens tasks what you need.
Could you add a simple button that makes things undone?
@yujin1st
Hello,
We will consider adding a "Undo" button as you described above.
Shall you need any other help or have additional questions, please do not hesitate to contact us.
Thanks for your support on Doit.im.