Would you like to have an author profile on your blog post?
There are 2 possible causes
(1) It is not an OS 2.0 theme
We are very sorry about this.
This app cannot be installed in unsupported (non-OS2.0) themes.
(2) It is not a supported template
The tag list is only supported by four templates: Blog Posts, Blog, Products, and Collection.
Please access one of the templates.