You can download Sims4Studio
here. You don't need to be a CC creator to use this program, it's also a useful tool for players. :)
Once you have downloaded and installed it, it should open automatically after install. In order to update your items, follow this:
http://i.imgur.com/j7RqGQc.jpg
It will take a while, depending on how much CC you have. Afterwards, all the CC should be available for both genders.
In CAS, however, when you create a Sim, it still has filters on by default (that is, if you create a female sim, all the options by default are feminine). You can remove that filter (you'll see it in-game) in order to see all the CC (and because of the batch fix, your CC should be available for both genders now).
The issue you're facing is also very likely due to low graphics settings. If you have laptop mode on, do turn it off, perhaps the issue will be fixed then. :)