Issue using personal blind oracle with webpage (emscripten esp32 bc-ur)

Hi,
I have a problem during the first setup of my personal webpage with Jade.
Here are the steps I've done to explain at my best:
1) I set up my personal blind oracle and the esp32 webpage using emscripten.sh script;
2) I've exposed both oracle and webpage with 2 different onion services, to reach them outside;
3) I've done a factory reset of Jade and I've pointed it to my personal blind oracle's onion service (+port);
4) All fine; Jade asked: "how do you want to connect?" I chose QR;
5) I set up first my pin, repeat to confirm;
6) I went to my onion webpage (qrpin.html) and I scanned the qr from my Jade;
7) The webpage remained stuck ad "step 1 of 4" and did not reply with its qr code.

If I skip the 3rd step (not point to blind oracle, and using default server), all goes fine and I can use my webpage to unlock the Jade.
If I don't use the webpage, I can unlock Jade with my blind oracle with cable+companion and all works fine.

How do I fix that? Did I missed something?
Thanks in advance