I add like this but not shown.show blank.
<img src="https://image.domain.com/uploads/2018/11/c.png" alt=" width="160" height="16" />
I'm sorry, but you cant add photo instead of forum title.
In “Forum Icon” section you can change default forum icons using font-awesome icon library. You can find all the icons here.
I can't understand, can you write more in detail