I am getting this error when connecting to my WordPress site:
Connection failed: REST API is not reachable, visit https://colivingwiki.com/wp-json" make sure your settings (Settings → Permalinks) are set to “Post name” (or any option other than “Plain”) and disable any security plugins that might block the REST API
Do you have any other plugins enabled related to authentication? maybe they are not compatible with the plugin? could you try to disable all plugins other than the basic auth one just to be sure that’s not the case ?