I've looked through several similar posts in this forum about the same issue. This is a group that we used regularly, so I do not understand why it would have been inactivity that caused the group to be deleted. All of my other groups are still working, although many of them have probably not been accessed for months.

There are 6 of us with access to this group. All of us are getting the same message - we have tried from home and office, with Macs and PCs (Windows 7 and XP)

Please let me know what we can do to recover this data.