It is expected behavior for this theme. There is no option to ad everything. YOu can either choose logo, Title, or Title + Description.
To add all these things in the header you will have to get your hands dirty and use some HTML/PHP/CSS. Here are similar forum topics about this:
https://colorlibsupport.com/t/add-3-line-text-next-to-the-logo/
https://colorlibsupport.com/t/how-to-add-tag-linedescription-under-header-logo/
https://colorlibsupport.com/t/logo-and-title-next-to-each-other-in-travelify-theme/