Why can't I change/edit the titles of my threads?

Is this something that only premium members are able to do? When I click on “edit” after I have posted something, the title to my thread will not allow me to edit it. It remains unable to be changed.
Am I doing something wrong?

click “edit” then click “go advanced” and you will be able to edit the title.

Yay! I did it! Woohoo! Clapclapclapclap!!!

Thanks Appsolute :slight_smile: