I have some questions that I am seeking  for your help to solve them.

Hi there,

Let's handle one question per topic:
https://www.screencast.com/t/UNTEQl6xWJX

First of all, how can i add many background images on the header?

Not sure if I fully understand. Can you provide an example?

The first question is solved , THNX
Explanation of Question 2, can
I use a different header background image on desktop and mobile modes?

CSS would be required here.

Can you link me to the page in question?

Explanation of Question 3:
why doesn't (advanced) button in the background settings?
I am looking forward to hearing from you,
Best regards,
https://ibb.co/RcQmSvP

Mikatakno.jp
I want to change the backgrounds for the Header on the mobiles because they are not compatible with it

Mikatakno.jp
I want to change the backgrounds for the Header on the mobiles because they are not compatible with it

Is there a specific page I should be looking at?

The home page doesn't seem to have the issue: https://www.screencast.com/t/PjTUGpsa4JaA

Mikatakno.jp/news
Mikatakno.jp/Company
Mikatakno.jp/locations
..... I want to customize mobile wallpaper images to become compatible all over the site

That image on mobile actually looks quite good to me:
https://www.screencast.com/t/Yr7ptzWq9

If you have the Pro version of GenerateBlocks, then you can use the Advanced background settings:
https://docs.generateblocks.com/article/advanced-backgrounds/

If not then you can try this CSS:

@media (max-width: 768px) {
    .gb-container.gb-container-bbc00baa {
        background-image: url(https://IMAGE-URL);
    }
}

Adding CSS: https://docs.generatepress.com/article/adding-css/

In fact, I own the GP Premium website and yet it doesn't show up for me
https://ibb.co/L9LSHPH
https://ibb.co/ZHJfSmM

The Advanced background option requires GenerateBlocks pro:
https://generateblocks.com/pro/

It's not the same product as GP Premium:
https://generatepress.com/premium/

How to use these codes and I want to use a separate background image in each page on mobile mode

Hi there,

How many pages are you wanting a different mobile image ? Is it just 3 pages or are there a LOT of pages ?