There are two different home pages, both have a box to sign in to Wyndham Rewards:

http://wr.wyndhamrewards.com/Wyndham...dvanced_search

https://www.wyndham.com/wbr/signin.w...t=globalSignIn

I believe that the 2nd is only for Wyndham Rewards properties with "Wyndham" in the property name and the first link is for all other Wyndham Rewards properties (that don't have Wyndham in the hotel name) is that right?

I've never had to have a separate account and different user name password for Wyndham / Wingate bookings in the past as far as I can remember, but I guess you do need a separate one now.