Just wanted to point out that there are compatibility issues with the ns-plugin-ns-points plugin. The following error is thrown when accessing any of the posts on Ghost

error: TypeError: Cannot read property 'uid' of undefined
at nodebbpath/node_modules/nodebb-plugin-ns-points/app/filters.js:68:36

It worked once I disabled the points plugin.

Solution for me:

--- a/src/meta/tags.js
+++ b/src/meta/tags.js
@@ -29,6 +29,9 @@ module.exports = function(Meta) {
                                    property: 'og:site_name',
                                    content: Meta.config.title || 'NodeBB'
                            }, {
+                                       property: 'og:type',
+                                       content: 'website'
+                               }, {
                                    name: 'keywords',
                                    content: Meta.config.keywords || ''

Found that the issue is due to missing og:type on home page

I have the same issue.