Drupal 8.x

I'm kind of at a loss as to why Drupal 9 would be released without the new default theme in place. Is this just more of the "visual is the least important thing" attitude? I would think a little eye candy would help the new release seem more like a new release and maybe even generate some market interest? With all the other complicated stuff going on backside, why is it so hard to get a new up-to-date default theme in place?

I installed the visitors module
https://www.drupal.org/project/visitors

I'm able to add the visitors link/path in the administration menu and in the shortcuts with the admin user.

I want to give to another role (editor role, that I have created) access to the /visitors page I tried to added it to the shortcuts an din the adminitration menu. But I receive the next error:
The path '/visitors' is inaccessible.

Hey, guys, I'm a new user of Drupal 8. I finished a website for my organization. Drupal 8 works well, but recently, when I try to add a new block to the page through the pages module, it doesn't work. The "Pages" module is under 'Structrue", when I add new block to the content of the Panels, I can see the list of blocks but I can't select anyone when I clicked any of them. Only a loading symbol flashes one second in the center of the screen.