Same over here. I received the new Strata Elite yesterday and receive the following:

Something went wrong…We weren’t able to take you to the page you were looking for.
Please try again later

Looks like it may be something with the Citi website trying to connect with Rocket/Booking? The URL has the following:

citi-partner-sso/error?errorCode=TravelErrorCode

Tried browsers, incognito modes, the app, etc. No help.

Anybody know a solution?