One of the very common mistakes group users make is: they allocate all storage and download bytes to sub-users, leaving the group owner account with 0 or little storage.
To correct the problem, please logon www.drivehq.com as the group owner account and click on the Group Admin link. You can easily re-allocate storage and download bytes among your group members.
BTW, please make sure to check your junk mail / bulk mail folder. If you still don't see our emails, please contact your email provider to unblock DriveHQ emails. We have replied your support emails.