Looks like i needed to set up a new email address. Looks ok now, and hopefully time will tell, as it was working for the majority of folk before, but a few users got bounced back.
Thanks Kor
thanks for looking into this for me. Unfortunately deactivating the plug in didn’t have any effect. i’ll keep looking into this, and look forward to the wpusers update.
Yeah, not sure where the author part of the url comes from.