On version 2.1.9 and WP 6.+ the add is not working… I noticed others have (had) this issue but an answer is never given on how it was fixed, or if was fixed…
Sorry about that, the problem is already reported but indeed its not fixed yet
I actually copied the PHP code from that page and pasted it into chatGPT. It told me that it is connected to the widgets which is 4 selections down. I was able to at least use Gutenburg to design something there. It doesn’t follow the theme but hey, I got something custom there.
Wow, thats awesome thanks for sharing