Support provided prompt attention.
Problem resolved itself - suspect too many "adds" in too short a time window with testing and update local network IP which resolved with new time window (?for security? - simply wait for another day)
Support moving issue to software for improvement or document - well done!
I have configured several cameras over the years - this software and method of using a Tenvis servers account and UID is by far the simplest and most genius - eliminates port and most other manual router settings (perhaps still desirable to have reserved/fixed local LAN IP), also eliminates DDNS setup (but should still work with fixed WAN IP). Camera still has options to allow set-up under older manual configs (set IP, set port routing, set-up DDNS - then setup software - all automatic with Tenvis P2P HD)
My second camera is on order.