I've checked the forums and haven't found this issue (or I'm not searching correctly).
I'm the site admin and a member has sent this challenge:
Thank you very much for your help with this issue. Please let me know if there is any other info I can provide![/li]
Have a great day!
The screen shot is in the attachment.
I've tried deleting and adding her email address and also changing it.
It happens on multiple platforms: desktop and phone.