My 7 year old has always hated brushing his teeth until I got him the Hum Kids toothbrush and App! Now he gets so excited every night to beat his previous score! One VERY frustrating issue though is that when he brushes his bottom left “zone”, humkids NEVER detects him brushing it and shows those teeth as yellow. Tonight he came to me in tears because he tries so hard to get a perfect score and he can’t because of this defect. I watch him brush and he actually brushes amazingly thorough, so I know it’s something to do with humkids . I tried to find troubleshooting for that, and other than making sure he is in the frame with the dots on the end of the toothbrush and the correct distance, I haven’t seen more advice. I do not see a way to send an email to the developers, so I guess this is the only way to request troubleshooting support? I know this is a ridiculous “1st World Problem”, but for a kid that would fight you every single morning and night to brush his teeth, now wanting to improve his technique (even asking to brush after lunch and before dinner!), I just want humkids to work and reward him for his attentiveness 🙂 I will give humkids 5 stars if this issue is fixed!!