I just checked, it works ok.
during the last 6-7 days, I had hard time to log-in to HGVC site or RCI link.
It works ok now, but it can be temporary.
I have had the same problem with WorldMark/RCI portal.
It doesn't work for me either, I get the RCI and HGVC logos and I can also log out, when I log out , it redirect me to the RCI home page and get this message :
Due to the enhancements made to RCI.com over the weekend, some members are experiencing slower response times. Technicians are currently working to resolve this. We apologize for any inconvenience this may cause. Your patience is appreciated.