I have Opera 20. The button in the top left has a drop down menu. On that menu there is no choice labeled “File.” Under More Tools there is a Bookmark Import function but it’s grayed out.
I have v12.16/ Build 1860... how’d you get v20?
Right click about 1” down from top; look for “customize > appearance”, and set-up your top toolbar with check-box choices. (Main, Status, Address Tab Bars)