The email from crowdstack has a link to renew: https://ogrforum.ogaugerr.com/.../premium-memberships
When clicked, it leads to a site which has another link, for a supporting membership, click "so sign up now."
When I click that, it reloads the same page. A box opens on left, which has an item for supporting membership. If I click that, it also reloads the page.