Adding post titles to a theme that does not support them

What theme are you using? Where did you download it from?

This is my site

https://everythinggoldenblog.com/

I’m using the onno theme, purchased here https://www.blogmilkshop.com/2016/01/onno.html

I’m sorry but as you appear to be using a commercial theme, you need to seek support from the theme’s developer/vendor. We do not have access to, nor do we support, commercial products here. Your best bet is always your product’s developer, so we encourage you to use the official support venues, as it allows the developers to be aware of issues with their code and gives back to the community in a more robust way.

ok, thank you!