Dear mr. Aigars,
Unfortunately, even after reading the other topics about sidebars not showing up, I am facing the same problem. For as far as I could remember, I did not change anything through CSS, but forgive me if I did (I am working on several sites and am almost 100% sure I did not change the Travelify theme).
If I indeed not change anything, how could I solve the problem?
Thank you very much in advance for your help,