Hi again,
#1/ Your hosting does not have permalink enabled, so when you turn on slug mode for the page URL it will not display
https://ibb.co/DrzLNzb
Your website also does not have an official domain name, but uses the IP of the hosting, so it is not necessary to enable this option until you switch to using the domain for the website.
#2/ Shop page is default woocommerce page, you cannot edit with Elementor unless you use elementor template for shop page.