A bug in colors?
I can't seem to progress through colors. Each time I click on Colors I have a star against translating "El look de Leticia Dolera" which I have translated at least three times now. The last time I did it, I got a message saying I had learned Prepositions! Something isn't right!!
I've had that issue as well, and even though you translate the same web page again, you don't earn points. However, if there's some element in a future unlocked lesson present in the translation, those points are attributed to that lesson. That may be why you "learned" Prepositions before you even got to it !