How do I get a Digest subscription?

Hello,
This will be my last attempt & apparently no one is monitoring the
owner's mail. How do I get a "Digest subscription"?

I am in the "users-lounge" at

http://postgresql.org/users-lounge/index.html

under Mailing List in the "See our subscription form for details", I
select the 'our subscription form' link which brings me to

http://developer.postgresql.org/mailsub.php

It serves a form " PostgreSQL Mailing List Subscription"
with a drop down menu of all the available mailing lists
Radio buttons to Subscribe/Unsubscribe
Receive mail? Yes/No
Digest only? Yes/No
and
Input text field email to subscribe

I have tried every permutation of email/diges options, and have not been
able to get digest mail for this list, [GENERAL]

WHAT am I doing wrong?

Otherwise I'll have to unsubscribe permanently. Thanks.

--- Joe ---