Post categories is not importing..

Hello, I used Elementor as builder and made custom blog widgets for my WordPress theme. I used One Click Demo Import plugin. But when, I import demo data in a new WordPress site, all things import properly except categories and posts. They just show a specific category tech (as example). only. It happens on every widgets where I use categories SELECT2 option. My theme has no bug for now. Why this is happening, I tried many times as fresh installation. It occurs in manually import too. Is this my category function problem or demo import issue..? I need Your help to much. I am sharing images and post widget. Please, help me.

https://i.ibb.co/H7q3sk7/Screenshot-2.png
https://i.ibb.co/LZs8Sv7/Screenshot-1.png

My Elementor posts widget code:

https://pastebin.com/Dk8fcFBE
https://pastebin.com/cjH1j2pp