Duolingo`s not taking away my hearts when i miss something or miss spell it. Do you know why?
First of all - *glitches. (Sorry, I always do that)
The problem is your internet connection. It might have a mind of its own - try making it more stable.
Like others have mentioned below please check your internet connection! Also, going to move this into the 'Troubleshooting' section.
I've had this happen before. It happens when my internet connection. You don't get any points for it.