Nether Portal not working

English;

For a few weeks my portal to the nether, which I had already built and used before, does not let me enter, I establish myself in the portal to enter as usual, and it simply does not let me, if perhaps when it wants to load the portal, after a day or two he lets me in, but then again he doesn't let me interact with him.
I don't know if it has to do with it, but some textures still don't load me like before, these are: All trades Visible and others, I hope it can be solved, it hadn't happened to me before, and I'm new, so I don't know what else to do, for your attention, thank you

Español:

Desde hace algunas semanas mi portal al nether, que ya habia construido y utilizado con anterioridad no me deja entrar, me establezco en el portal para entrar como siempre, y simplemente no me deja, si acaso cuando quiere carga el portal, despues de un día o dos me deja entrar, pero de ahí denuevo no deja interactuar con el.
No se si tenga que ver, pero algunas texturas igualmente no me cargan como antes, estas son: All trades Visible y otras, espero se pueda solucionar, no me habia pasado antes, y soy nuevo, asi que no se que mas hacer, por su antencion, gracias.