S'il te plaît ou S'il te plait?
Any other time, DL tells me to "pay attention to the accent" but in this case - any of these were correct??
Could someone please explain? Merci beaucoup!
The correct answer is that plaît was the only correct form before the 1990 French spelling reform. The correct form is now plait. But nowhere will anyone be reprimanded for using the old rules of spelling, so this makes both answers right, for two different reasons.
S'il te plaît is the correct form of the phrase "if it pleases you" (informal) (AKA "please" in English). S'il te plait is accepted for those who do not have access to a French keyboard.
Did DL revise their answer options?
In the past, when I've been unable to produce any accent marks, DL will still mark me wrong for missing the accent! This is the first time I was marked wrong for missing one.
In general I get answers where I have the accents wrong as accepted but with a note to tell me to pay attention to them. I would consider it wrong if they offered answers with careless use of accent marks though.
However, I looked up plait on Wiktionary.fr and it says that the spelling was changed in 1990 to use an unaccented i. It gives plaît as a variant "orthographe traditionnelle". So it looks like Duo is correct here.
No, Duolingo (correctly) does not allow you to ignore accents (they're not optional and there are several ways to enter them - you don't need a French keyboard). It accepts these answers because they are all correct, due to spelling reform (which has been largely ignored, in reality).