(Oh lord, your name made me initially mistake you for a well known forum troll...)
I think I know the source of your problem, though.
On the "Map" selection tab, did you change the "Featured Maps" to "All Maps"?
Here's a gif explaining it:
I have no idea why Featured is the default option and that can't be changed, but you have to take off from it if you want to see all other maps. Yeah, it's pretty annoying. Specially because "Featured" is a very arbitrary decision by Fizzer, seeing as only 3 (some would argue less) of these maps are actually good.