Bitbucket DC license expired before the last day on my.atlassian.com

A customer has a BbS DC license, which period was Aug 1st, 2017 to Aug 1st, 2018 by invoice and my.atlassian.com.

However, the license expired on 31st of July 2018 (JST).
And then a lot of users cannot push to their important changes to BbS.
And this causes stopping their important jobs.

They know BbS noticed "License will expire on July 31st". but They believe the date of my.atlassian.com. And more 31st of July is different from the contract period of the DC subscription.
The expiry is shorter one day than the contract.

If the end of contract day is 1st of Aug, users should be able to use 1st of Aug whole day.