How to update the end date of my logbook?

The end date of my logbook has passed ，but I can't update the end date.
When I click the save button, it didn't worked.
Why? How can I do?

 

Make sure the end date is in the future and please use the calendar function rather than direct date entry. If using more than one logbook for the same callsign, make sure there is no date overlap.

 

3Q,Let me try.

 

The webpage isn't worked.I can't update the end date of my logbook.

 

Ask @W1DQ for assistance.

 

updated