It is time to perform the quartely generation of a new public Slack invite (https://openedx.slack.com/admin -> Invite People -> Edit Link Settings -> Never Expires -> Save, -> Copy Invite Link), and update the redirect of openedx.org/slack to the new invite (ask a site admin - eg Sarina/Feanil/Ed - for help here).
It is time to perform the quartely generation of a new public Slack invite (https://openedx.slack.com/admin -> Invite People -> Edit Link Settings -> Never Expires -> Save, -> Copy Invite Link), and update the redirect of openedx.org/slack to the new invite (ask a site admin - eg Sarina/Feanil/Ed - for help here).