see it accept authentic email addresses that contain a hyphen ( - ). They will loose customers.

I would like to... suggest an idea
see it accept authentic email addresses that contain a hyphen ( - ). They will loose customers.
Heads-Up on Registration – If you are having a problem when you enter your email and ‘it argues with you’ by telling you again to enter your email, you may have an ‘unacceptable’ symbol in your email address.
Mine has a hyphen-, although it’s an authentic address, the system doesn’t seem to recognize it. I finally tried another address [although the second address has a period between two words] it accepted it and I got the code.
I hope this saves you some frustration; I was about ready to uninstall it.