So please post your site URL so that we could inspect further and help you.
2 Is it possible to set a personal header image for each page?
Currently, the theme does not have the feature to set the different header on the different page and as much as we would love to help you with some code customization, we are unable to do so as it requires higher code customization.
So for this you can always consider hiring the professional developer so that your theme won’t be affected in any way and to do so please follow below-given link:
Yes if you want to make any changes in the theme then it is always the best idea to go through the child theme. If you have made any modification directly in your original theme file then all of your modification will be lost upon update of the theme to the new version.
So we strongly recommend you to use the child theme for any code customization in the theme.
As for creating the child theme, you can create the child theme manually or you can simply create the child theme using the plugin given below:
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