To answer your question, Sage decided not to renew their contract with Agoracom Investor Relations and requested that all inquiries about SGX be directed to their own Investor Relations people.
Now........ the puzzle is this......... why have Agoracom deleted the SGX hub? After all, there are numerous hubs that do not, nor have not, subscribed to Agoracom's investor relations yet thrive very nicely on public input.
The question I would pose to Agoracom is this, "Did you part on bad terms with SGX? Is that why you won't allow a generic SGX hub?"