The handling of the castle is a bit cumbersome. Opening and closing is only possible when the button is pressed on the side. The dials are quite small and quite far inside. The lock bar can only be inserted straight into the lock head.
The bag fuktioniert quite good, the velcro is stable and does not move. When driving the lock rattles little. Something firm is getting out of the castle from his pocket, especially in cold weather. The length is sufficient to fasten the frame to a bar or a cycle stand.
I do not know how the thief has opened the castle, apparently there is but one way. Anyway, the wheel lock together in the evening was there, gone in the morning. Flex I would rule out, as the area inhabited and is quiet, a Flex at night would have been more noticed. I think there is a way to find out the combination with little time.