Finally, one tick is enough
I haven't written anything for about a week, and I realized it has changed a bit. Now I don't have to write unnecessary checking codes. Hey, it's great! :D
So finally, I only have to tick "I am not a bot" option. Great! To be honest the previous checking machine didn't really work well.
Although sometimes I tend to forget to tick the option. And it still gives me a message that says that there was something problem with my submission... There must be something wrong with my Internet or with my computer.