Hi Luc,
breaking news : it’s not your fault.
Everything worked fine until the new version of Snap! 4.1 (at the beginning of February)
Now Snap! needs an httpS connection with Ergo, and Ergo only provides http
Yesterday on this post
I explained how to make the Ergo communicate again with external Snap!.
(I had to modify ALL the Poppy blocks)
Here you can find the “new” blocks : poppyblocks_snap4.1.xml (85.7 KB)
It’s not perfect (you still have to click on the shield in the address bar to load insecure content) but so far, I think it is the only way.
Good luck Luc !
Gilles