Have not got the opt-in email

I am one of the site admins for my club (Club 405) and the Club President and VP of Membership. I sent the "opt-In" to 2 new members 30 days and 1 week ago and they have not received. Tried again this morning and received the attached message In the meantine, I continue to receive a message notifying me that the member has been sent the message -whis they assured me they have not received in neither regular nor spam mail. Please advise on when and how to resolve.
Regards,
Stephanie Richardson, DTM Club 405

----Original Message

---

From: server@toastmastersclubs.org
To: missvi1@aol.com
Sent: Fri, Aug 20, 2021 10:30 am
Subject: Ray Huber Pending Addition to Dayton Toastmasters Club 405 Website (copy)

*** This is a confirming *copy* of an email sent to "Ray Huber" for his/her pending addition to your website. ***

---

Ray Huber:

This is an automatically generated email. Your addition as a member to the
Dayton Toastmasters Club 405 (Club 405) website is pending--
please click one of the links below.

If you agree, your name, email address (if provided), and your phone number (if provided) will be stored in the website.
Your name or email address can be used to login to the website to update or remove any of your personal information stored.
Your email address is used as part of an email list to send you updates about the club and notifications
of upcoming club events and meetings.

If you decline to allow your contact information to be added, you will be *deleted* from the website, unable to login,
and unable use the Dayton Toastmasters Club 405 website and its services.

If you AGREE to allow your contact information to be stored & used as described, click the following:
(***Link omitted in this copy.***)

If you DECLINE to allow your contact information to be stored & used as described and want it deleted, click the following:
(***Link omitted in this copy.***)

You will see a another screen to confirm your choice when you click the above links.

If you have any questions about this email, please contact the club website administrator Pamela Irene Thompson-Griffith by
replying to this email.
Regards,
The FreeToastHost Website Support Team
< support.toastmastersclubs.org >

1) please ensure you have entered their emails addresses correctly

2) raymond.huber.com unresolvable - domain does not exist.

3) Please have yeongdae check their spam folder as gmail is accepting the emails to them

Aug 20 14:24:53 toastmastersclubs sendmail[31029]: 17KEOquE031026: to=<yeongdae.shim@gmail.com>, ctladdr=<server@toastmastersclubs.org> (501/502), delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=122199, relay=gmail-smtp-in.l.google.com. [209.85.201.27], dsn=2.0.0, stat=Sent (OK 1629469493 s2si4549433qti.334 - gsmtp)
Aug 20 14:28:16 toastmastersclubs sendmail[32111]: 17KESGX6032108: to=<yeongdae.shim@gmail.com>, ctladdr=<server@toastmastersclubs.org> (501/502), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=122199, relay=gmail-smtp-in.l.google.com. [172.217.197.26], dsn=2.0.0, stat=Sent (OK 1629469696 w1si4183887qkd.111 - gsmtp)