Websites work only with 755 at public_html

Hello CWPers!
My website file work only with 755 folder permissions at /public_html

If I modify the /public_html to 750 then I get Forbidden to any /public_html/file.html or .php

What do you suggest?

Folders have to be 0755 and files 0644. Instead of 0750 you can block direct access to folders with htaccess.

So what exactly have I to do with /public_html folder please?

What do you want to do with public_html exactly?

You can block access from web with .htaccess like this example stackoverflow

Have I to set for /public_html 750 or let it 755 as it is working now?

Just leave it as is (755). No need for changes in CWP.

So it is no problem, for security issues to leave /public_html to 755?

Is it OK?

You can leave it as-is. There shouldn't be any problems since it's default CWPs setup.

I migrated a website to a new CWP installation and it works under 750

I can not understand why the previous installation works only with 755 at /public_html