I passed your wisdom on to the upset member. Hopefully he will be reassured. I suggested he check if he can see everyone else's full email to determine the current setting.
If he can I'll talk the owner through how to change it by following your instructions.
I'm a bit tired now so I'm going to leave these intensive threads until I've had time to check in and say hello to my new groups.
I prefer the positive cheerleader role most of the time. These have been an effort.
I may be some time...