A classmate contacted me to change his email address. In haste, the email address I changed is typed incorrectly.
I have since updated the corrected email address. Because the change email address i added was incorrect and now is corrected, and I did click Save, will this classmate have a problem accessing our website?
OR should i go back, add his old email address and input new email address?

Whatever email address is there now is what he'll need to use to log in.

Thanks, John!