I am a member of a camera club and we use zoho mail. We have two groups set up to receive emails. One group is members and the other group is for the steering committee.

I am attempting to add a new person to the steering committee email list. When he gets the email to authenticate, he clicks on the link and is asked to put a password in and it displays his email as the user name. When he puts a password in, he gets an error message stating he has an invalid email. This makes no sense to me as he is in the members list with the same email and there was no issue authenticating it.

Personal experience has taught me that sometimes it is the password that is the problem, so I have ensured he has used at least eight charactors with upper and lower case as well as a special character. 

Anyone ever have this issue and know what needs to be done so he will authenticate??