Of course, you are right, and often there are those with excellent answers to questions. I was just expressing my frustration that often that is not the case. Clearly, duolingo is a free service, and they cannot afford to have essentially free live tutors to answer questions.
I gave a correct answer ("Now it's too late"), but I'm not sure if it's completely right; I'm a native portuguese speaker, the way we say:
"Ahora es muy tarde" (Agora é muito tarde)= Now it's very late (like when someone asks the time, you can say when it's too late, but it's not the best expression in this sense)
"Ahora es demasiado tarde" = Now it's too late ("you can't do something anymore / it's over", that's more or less how you'd use it in portuguese)
For saying "now it's too late" in portuguese we have:
Agora é demasiadamente tarde (sounds a little antiquate)
Agora é tarde demais (what most people would say)
Any native spanish speakers to shed a light?