I can't seem to be able to have a profile picture or an avatar.
Does anyone know the reason for this?

In the profile menu you will see


Vincular a un Avatar fuera de este sitio:
Escriba el URL donde se encuentra el archivo de imagen de su Avatar.


And there you have to upload a picture from the Internet.Then it will be shown on your avatar

Cheers mate

I think you must put than you have 0 years and you would can change the profile

You were right.

Cheers FaaS