@danstuff, I think @spotter is correct. The Mar 19 date shown is for *gridserver.com (presumably the hosting org) and not for escape-technology.
NET::ERR_CERT_COMMON_NAME_INVALID
This server could not prove that it is http://www.escape-technology.com; its security certificate is from *.gridserver.com. This may be caused by a misconfiguration or an attacker intercepting your connection.
@danstuff, I think @spotter is correct. The Mar 19 date shown is for *gridserver.com (presumably the hosting org) and not for escape-technology.