Photon self hosted + WebGL

Hi guys,
I'm having some trouble trying to setup up a self hosted Photon on Amazon EC2 for a WebGL game.

For testing pourposes I'm building the exact project from the Unity Asset Store (Photon Unity Networking Free).
My Desktop build can connect just fine on the server, but I coudn't make it work with WebGL.

To ensure it wasn't a port problem, I set all traffic free to my EC2 instance.
Also, I followed this tutorial to allow wss:
https://doc.photonengine.com/en-us/onpremise/current/operations/websockets-ssl-setup

In my Unity project, I changed the Photon port to 9090 (which I understand to be the wss port for Photon Server).

So, here is what shows up in the brower console when I run the game:



Do I have to do anything else to run the server on WebGL? Something on the client side maybe?