Unable to Sign-Up for Agenda Roles

Since December, our members are no longer able to sign up for agenda roles once the Admin agenda is sent out.  They receive the admin agenda email, click sign-up, then an email autopopulates for them to send, but their name never appears on the agenda.  Only if the admin logs in and adds them will their name show up.  We have tried refreshing the agenda template used and a few other troubleshooting methods, but no idea how to fix it. Any ideas?

1) Without your club number we can do nothing for you.

2) Have you tried the email signup as a member?
What exactly happens?

Club 6299
if you click sign-up, a pre-filled email appeara, then I click send, but no confirmation is received that my sign-up regiatered and my name never adds to the agenda