Thank you, we've found the problem – we have Google fonts disabled as they reduce website speed. Now everything is working. However we have to solve fonts issue. Could you write which one of 2 options below is possible and how to do it?
1) Preferable – Remove post title at all (we have it on the image preview, there is no need for the title}? see attached
2) If removing the title is impossible, how can we change the fonts so they are not Google fonts?