Sydney masonry (grid) problem

I have problems with masonry layout for blog.
First everything was jumbled, overlapping etc, but I solved it with the help of this thread
Now it’s all even, only one thing is wrong: posts are sorted by 3 in one row, and the last row (4th) has only one post, on the left.
I have enough posts so it can be filled.
How can I fix that?
My website is and I’m attaching screen pics.



Try to set 9, 12, or other multiple of number three, instead of default 10, in Settings → Reading → Blog pages show at most input field. Please feel free to ask any other questions that you might have.

Kind Regards, Roman.

Thank you Roman, it works!
All the best,

Great! You are welcome Vlatka :slight_smile:

Kind Regards, Roman.