NeurIPS workshop registration for registered author [D]

For NeurIPS, I already registered a few months ago (for Atlanta) when there were news that Sydney is sold out. However, I forgot to register for the workshop. Now, when I go to register just for the workshop, it just says that

"This session is sold out to the general public. Authors may register from a reserve, but each paper admits at most 1 of its authors that way, and the places for your paper(s) are already held by registered co-authors: “---”. A place frees up if the co-author holding it cancels their in-person registration."

I am the person using the reserve spot, but I cannot register for more. It seems like the only option is to cancel my main conference spot and reregister with both, but I don't want to risk doing that now that everything is sold out. I am wondering if anyone ran into the same situation.