So, I try now to answer my own post (this one)…
It works.
But not when trying to reply to another thread, such as: https://developer.apple.com/forums/thread/779777
I tried from an iPhone, doesn't work either.
It seems that the (new) anti spam is at work.
• If I post this answer, with the word f r e e (edited from f--e), reply not accepted.
Go here for (f r e e) material to get started: https://developer.apple.com/pathways/?cid=ht-pathways
• But this reply is accepted:
Go here for material to get started: https://developer.apple.com/pathways/?cid=ht-pathways
Anti spam is now way too sensitive.