Open the app.
Select at the top of the app. TAKING.
Now press the blue round key with the 3 dashes on the bottom right and then select Trash.
Now tap the blue circle with white cross at the task to be deleted.
Select delete.
The task is now gone.
Then tap the bottom right of the checkmark to end the delete function.

Open the app.
Select at the bottom of the app. Tasks.
Touch the job to delete.
Select task deletion.
Confirm this by selecting again.