Both say, "there is no need for new contracts and that it was a misunderstanding with Pacific Magazines accounts department."
Anyone who signed the contract issued in 2015, or has signed one since, will be covered by that.
In the personal message she added, "Thanks for bringing this up and glad we got it sorted." And in the other email she thanked those who'd been in contact.
It is worth querying things we're not happy with, sometimes (As happened with YOURS) we do get listened to.