We bought this because I love Ninja products and we liked the idea of the built in frother.  I’ve had some successes but my main challenge is I end up with coffee grounds all over the pot, brew basket, and in my coffee!!  I’ve tried to buy beans and grind them very coarse, which works most of the time.  I’ve wasted so many pots of coffee.  I’ve tried pods and the same thing happens.
Yes, I’m using a paper filter and it’s the right size.  I’m using the right amount of coffee grounds.  
Please help.  
Needing caffeine