Changing my reservation

[megamoth]

Hi there,
Sorry if this was answered elsewhere, I wasn't able to find it (my forum-fu is terrible). I realized that my current reservation doesn't include the night of sunday, May 24. I tried to change my reservation online (I'm at the Crowne Plaza hotel) and of course there were no more spaces, because the program tried to replace my current reservation with an entirely new one, instead of just adding a day. I was wondering if there was a way to simply add a day. I was instructed not to call the hotel directly, but should I anyway?

Is there something obvious that I missed? Which is entirely likely in my case...

Thanks!

[ewu]

if you booked through the fanime website, you can call CMR:

CONTACT OUR CUSTOMER CARE CENTER:
Monday - Friday, 6am - 6pm (Pacific Time)
(800) 924-4232 (US & Canada)
(415) 979-2282 (International)