Instead of removing devices one by one, you can remove all devices in bulk.
Remove all devices
Navigate to Menu -> Devices
Scroll down to Unsorted devices
Click the Remove all devices button.
A confirmation box will pop up. Click the Delete button.
Vilfo will now remove all unused devices in the group.
Note! Vilfo will only remove offline devices in the group Unsorted devices. Any Online devices or offline devices in other groups will not be deleted. To delete these devices you have to remove them manually.