AbbeLabben my extension is made of a Wordpress plugin and of a Flarum extension. The Flarum extension must be bought through flagrow.io, and can be installed via the Bazaar extension (which acts as the marketplace for flagrow.io), or by adding a new Composer endpoint manually in composer.json. The Wordpress plugin can be downloaded from my documentation and installed like any other Wordpress plugin.
Then you need to configure the plugin and extension on both side to tell them where to find each other. Then Wordpress and Flarum can talk between them.
You need a fully functional Wordpress site as well as a fully functional Flarum site. They can be hosted on the same server or different server. It doesn't matter as long as they can make queries to each other via their HTTP APIs. The only constraints are regarding domain names and cookies as they need a common top level domain if you want to use the SSO feature.
It does not make Flarum installable from Wordpress or vice-versa. It's just a bridge allowing two features (SSO and comments integration) between otherwise independent installs of Wordpress and Flarum.
If you purchase my extension and the documentation is unclear on a point, I'll be happy take a look to improve the explanations.
