For who does tumblr integration work?

Is tumblr integration working for anyone? If yes, do you post with your own domain or domain?

I’ve seen several posts over the last year indicating tumblr integration isn’t working.

The instructions to follow are:

I tried several times. On tumblr’s side it is acknowledged, on it is not linking.

Other posts:

Wishing to get to the bottom if it doesn’t work, or only doesn’t work for some and as such what the issue could be.