Hey there @Franz1,
I understand that integrations can be intimidating!
While the solutions mentioned in that post require the addition of some functions to Wordpress, they’re not prone to break with updates. The WP Discourse plugin (also an official plugin) provides the utility functions described in the post and is maintained in line with Discourse in the same way the Discourse Subscriptions plugin is.
I’ve used these integrations myself on multiple production instances over a number of years. In a similar vein this is another integration you can use
While that’s possible, that’s much more likely to break than using the solutions described in the linked posts.