>I have one more game awaiting my move than I actually do. When I've made all my moves in all my games, it still shows one game waiting my move when there isn't. There are no games waiting my move in any of my folders, so where is this extra game?

Can you remember when you first noticed this?
If so, look on your completed games after that date.
Chances are one of your completed games has not updated properly because of some problem with your opponent e.g banned or left the site.
When you find it , send feedback and they will clear it for you.