happened to me too.
"The mirror has a big frame" is synonymous (I use big and large interchangeably). I've reported it.
The French word "large" also means "wide", according to various authorities, including yourselves! What can be wrong with "The mirror has a wide frame"?
I have just reported that so far, in lesson 2 of level 4 Objects, the sound system is not working. Guessing and eliminating takes so long.
"The mirror has a broad frame." is marked wrong. Why? Doesn't large mean "broad"?