Only one usage issue arising.
When adding user from both front end AND back end, the "Welcome" email sent had NO proper ID and NO verification code. Instead received:
1) I did a delete and then a complete install on my new project site at url in private area.
2) Install went absolutely smoothly, no issues whatever.
3) The verification email sent after requesting in profile, and after inserting from front end, did have proper code in.
4) I did a test mailing, and it went safely to the only two persons in the userlist.