This is Wyndham's response:
Hello Mr. Simpson,
Thank you for contacting CLUB WYNDHAM® regarding your RCI Online account.
We sincerely apologize for any inconvenience this may have caused you and for our delay in providing a response to your e-mail. At this time, you may only access your RCI Membership through your online Club Wyndham account. You may have to adjust your screen resolution in your display settings for the RCI page to show up correctly. If you continue to have this issue with your RCI online account, please contact RCI directly at 1-800-572-0931 (Monday–Friday 8:00 am–8:00 pm EST/Saturday–Sunday 9:00 am–6:00 pm EST).
(The rest cut out that has nothing to do with the issue).
Does it work? I highly doubt it, since screen resolution will not change issues with Internet Explorer/Firefox/Safari. So, call RCI to get a resolution!
TS