I wrote "We take a nap after lunch", but it was counted as a mistake. In American English we don't usually say "I'm taking a rest": it sounds awkward. We could say "I'm resting", but we would say "I'm taking a nap" rather than "...a rest".
The audio sounds like "odpoczywajmy" and not like "odpoczywamy".
I wrote "let's rest after lunch" and got it wrong.
It wasn't an audio exercise. I just translated what I heard without reading the text.
Yeah, I guess you can't trust the TTS...
True, it does sound a bit like that. I disabled the audio exercises so others won't have problems.
Not exactly. The sentence here is in Present Tense, so either we are resting right now, or we always rest after lunch.
Your sentence, being in the Future Tense, translates to "odpoczniemy".