Iconos en Rojo/Icons in red color

Ya habia publicado que mis luces no se veian en el modo render, y ahora que puse una imagen de referencia no me sale. Y el icono aparece igual en color rojo como si estuviera desactivado. Esto me esta empezando a desesperar.

I had already published that my lights were not visible in render mode, and now that I put a reference image it does not work out. And the icon appears the same in red as if it were deactivated. This is starting to make me despair.