It does not matter what is on your GE card. It only matters what is on your passport (although the names should be the same). My passport has a '-' in my middle name, but not on my tickets. It does not matter. I doubt if a space matters. It also often the case that my first and middle names are chained together without a space on my email confirmation, but it still shows up correctly when I get through the GE kiosk.

I might be wrong, but in my experience (>3 years on GE, even with a passport renewal last year), there has never been a problem because of inconsistencies like this. If you run into problem, just fill the custom form and get to an agent. There is no need to wait in line.

If CX does not reissue your ticket, I don't think there is any major issue.