1- Thanks for understanding.
2- You can add the brand’s images from the Dashboard >> Products >> brands >> edit a brand and set the image as you can see here: https://postimg.cc/ppv76VZw
3- You can add only 1 custom tab in 1 product. Adding more than 1 custom tab in a product is not possible from the theme settings.
You have to create it manually, I have checked and confirmed that there is no way to import that section only so you have to create it the same as it is in our demo.
Regards 8Themes Team.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.