The main avenue for communication is the Grove's Facebook page located here - https://www.facebook.com/groups/124335797618798/
or,
via email, send a message with subject or body 'help' to
muinmoundgroveadf-request@muinmound.org
Once
you've joined the mailing list, you can send mailing list submissions
to
muinmoundgroveadf@muinmound.org
And for any problems, you can reach the person managing the list at
muinmoundgroveadf-owner@muinmound.org