At a guess you'll have difficulty getting access to these back.
If you're still on speaking terms with the employer you might be able to ask if they've closed your access completely or just changed the password.
Another alternative would be to send an email directly to the Fresco Team. From Settings tap Help, then Report a Bug, edit the email header so they understand you're not reporting a bug but asking for assistance.
If I knew how to tag specific members of this forum I'd do so to get their attention, but I haven't figured that bit out yet.