E-mail delivery affecting ability to make admin changes

For a few weeks now, I have been unable to make any admin changes to my club's site (pbjpitt.toastmastersclubs.org, club #1357973) because apparently it is unable to send mail to my address (vance@happylemur.com).  This is the message I get:

1. Administrator Info Tab - You have entered an invalid or non-working e-mail address. (No advertised SMTP servers are accepting mail.) One email address only please, in the form of name@address.com.

I can log in as a user (with the same associated e-mail address) and interact with the meeting agendas, but when I e-mail out an agenda I also get a message that it couldn't be delivered to my address.

My address is absolutely accepting e-mail from other sources and I have done nothing to block toastmastersclubs.org.  (There is the possibility that my mail provider has some blocking I'm not aware of.)  I was waiting to see if there would be a system-wide fix given previous support requests from others like this , this , this , and possibly this , but so far nothing has changed.  Please let me know if this can be corrected (preferably for everybody), thanks!

FIRST - Check that your email in the MEMBERS roster is valid.
...I had this problem a couple weeks ago when my server bounced a few times and the FTH system put a dummy email in for my address so it wouldn't keep bouncing. Took me a while to find the dummy email.

I can confirm that my e-mail address above currently appears as both my member address and the administrator address.

Edit: I did receive a notification e-mail message from the forum, so clearly it is possible to send to my address.  Don't know why the club web site would give a different answer.

2nd edit: Just to be sure, I cleared my cookies and browser cache, logged in as the administrator again, and still get the same behavior from the site.

When an email address is valid and otherwise (outside of FTH) working the cause is often an IP blocked on the FTH firewall due to spam activity. This generates the (No advertised SMTP servers are accepting mail) message.

Your email address has three associated IP addresses and two of them are blocked for this reason.

Brian (Admin) will need to investigate. We can see the IP blocks but ambassadors cannot remove IP blocks from the FTH firewall.

the IP for your porkbun email has been unblocked for now.

Thank you, I can confirm that I'm able to log in as the administrator and make changes now.  I also received the login notice e-mail message.