This problem can occur when the pin is not fully inserted into the hole in the lock.
If this happens, please follow these steps:
1) Press the button so it turns Blue
2) Hit Unlock (this will re-open the hole - the button will turn green)
3) Insert the chain again, and hold it all the way in
4) Press the button again so it returns to blue
5) Hit Lock
Make sure it is secure!
If you have problems, please call us at (415) 483-5733