Title is the question.
I had a problem with the new site too. I could not see my mutual funds. If you scroll down in the log-in box you will see an option to log into the old site format “Si lo prefieres puedes ir a la versión anterior donde aún podrás ver y operar con tus Inversiones”. I just checked and you can see the payment option (pagos) there.
You saved the day. For some reason, I failed to see that option. Must be age.
Glad to help. It took me a bit to notice as well.