I have problem with blog page display. It’s currently here: http://przyzielonymstole.pl/blogg/. And looks like this: http://prntscr.com/jqr8nh
When I change the link to excpected http://przyzielonymstole.pl/blog/ the whole page design is gone. It became to look like this: http://prntscr.com/jqr9aw
Could you please take a look why I’m receiving such error?
I could confirm the issue on my test site therefore notified the theme developer about this so that it will be fixed.
The issue will be fixed ASAP.
In the meanwhile you can try resolving the issue by renaming the theme file page-blog.php to page-blog2.php