Is the app trying to dissuade us from using it?

this is my favorite grammar form in korean. you hear it all the time. I just love it. litterally translates to "let's not"

is that what it said during one of the lessons? if so that is really funny!

"오늘'은' 공부하지 맙시다" is more natural form

The ㅂ or "b - sound" in 맙시다 shouldnt be prounounced, it should be silent