I found another issue here.
Everything worked fine, util I made a newly created page a default blog page in WordPress.
Once it was set as a default Blog suddenly Template option disappeared and Page setting are not working.
Thanks a lot. This solved the problem.
I will experiment with Unyson although I’m still missing some templates used in demo.
Sure.
Site url is: https://pracuj.vc/
I just started to set it up.