New members were accidentally deleted-cannot now add-shows email already used

Hi - I am one of site admins for club 7039 Chardon Toastmasters and also club President.  Two new members were accidentally deleted and now I am unable to add again as system says their email address was already used and cannot be reused.  Their names are crossed out on the members list.
Please advise how they can be added.  They have no other email address to use.
Thank you very much.
Juel Leonard DTM

I found out the hard way a long time ago that a given e-mail address can only appear once, across all of the FTH lists (Member, Guests, etc.), but I don't believe your problem to be an e-mail address already used issue.  Why? (and assuming that that Messrs. Wyatt and Brewer are the folks to whom you are referring), a crossed out name means that a person has not yet opted in, and thus the system prohibits communication with him.  I just re-sent the Opt In message to both of them, and per FTH suggestion, someone should follow up via phone to ensure the message was received (check junk/spam) and encourage the recipient to accept (opt in).
Hope that helps!