How do you start something with a parameter?

I have tried reinstalling a couple of times before, but nothing happened. I'm on windows 10 Pro and i have no idea which version of opera i downloaded. And i cannot access the Opera About (it looks the same as the settings)I'm actually using the browser from quite a lot of time and i really like it. It's just this menu glitch that bothers me, because for an example i can't really enable adblock or profile and stuff.

I literally click on settings and i see the tabs and stuff, but it doesn't say anything. When i hover my mouse over an object it highlights in different color and all i have happened to see is the home page image change. And it doesn't happen only with the settings but with bookmarks and extensions menu aswell.
Settings: http://imgur.com/a/vSm4g
Bookmarks: http://imgur.com/a/rNsjx
Please help if you happen to have any ideas. I've searched the forums and google/youtube for solutions, but unfortunately couldn't find anything.