I think it is win 6.5.3 problem when sometimes you can’t find OK button. Maybe someone found solution?
About opera app, which was in rar – nice, but if you write www address – you don’t see anything, because there are white letters on the white background
Ok button is located at one of the buttons on the bottom, sometimes if not present, button "Done" does the same job
About the white letters, just change the theme, the black theme cause the texts to be invisible (in opera and others)