1. You can Drag and Drop to re Order Header Elements. In our theme have a notice that Page Options will override Theme Options. You can understand more about it follow this topic: https://harutheme.com/forums/topic/why-theme-options-doesnt-apply-changes/
And see this video to understand How to manage Header: https://www.youtube.com/watch?v=4Zi2MwXSm98
2. About Delete Categories we don’t really understand your question. If you want to manage Menu items you can do it in Appearance -> Menus and select Vertical Menu.
If you don’t want to use Vertical Menu you can choose another Header.
Hope this help!
1. In current version 1.2.7 doesn’t have user element.
However we’ll add it in next version.
We shared with you version 1.2.8 (Now not updated on ThemeForest) https://prnt.sc/st3ipk
You can try it now.
2. You can choose another Header or go to Appearance -> Customize -> Additional CSS and add this code: