The option to edit/delete tags is not available in the iOS and Android versions of the app. Instead, you are required to access your account in the Todo Cloud web portal and follow the steps below to get it done.
- Select a task in your account to access the details screen
- Scroll to and select the Add Tags option at the bottom of the list
- Click the trashcan icon next to the tag you wish to delete
- You will receive a prompt. Click the red Delete button to confirm the action.
Note: Deleting a tag will remove it from all tasks it is assigned to.