Have you tried different "casing" for your username?

I've noticed (in my saved passwords in Firefox) that I've had both solid uppercase "MYUSERNAME" and sold lowercase "myusername" at different points with Wyndham. I don't know if both work currently, but you may want to look into whether you have a casing problem with your username (where you think it has to be typed one way but now it has to be typed a different way).