Hello, it’s me again.
I managed to solve this. I don’t know if its a bug or I was doing something wrong, but this is how i solved it:
As @sowdenraymond told me, I modified the Grafana.ini file to set “true” the embed iframe. This did not solve it, so I went to ( allow_embedding does not change X-Frame-Options · Issue #52364 · grafana/grafana (github.com) . This also did not solve my problem, so what I’ve done is to restart the device where I host the Grafana server, set everything to “false”, then again restart, set everything to “true”, restart again and then it worked lol.
I do not understand what happened, but at least I can tell you that allow_embedding = true and having the anonymous user configured is a must, the rest is up to your luck xD.
Thanks @sowdenraymond for your interest and help, maybe you can explain this 