Does the robot voice have a problem with saying "een"?
To my ears, it sounds like it's saying "bin". Is that how it's actually pronounced?
Try Forvo to hear how it's actually pronounced by real people. Mevrouw Duo does not sound like she's saying bin to me but I've just started and have heard she doesn't always pronounce everything correctly.. Forvo is a better resource.
I've noticed it doesn't happen all the time, but about half of the time, I hear the robot saying "bin" for "een"
Mevrouw duo spreekt "hij", "zij", "wij", "mij" verkeerd, denk ik. They're supposed to sound like "hi", but Duo pronounces it more like "hey". Interestingly it only accepts the correct pronunciation when you have to speak in the microphone.