After getting professional help, we were able to stop error codes on the dryer and it now works fairly well. It will stop drying if one item if it senses one item is dry but the rest of the load is not.  Here's my chief complaint. When I downloaded the smart app on my phone and clicked on "add a device," the app didn't recognize the QR code IT TOLD ME TO SCAN! The code is perfectly clear and clean. Wow, LG. There appears to be a way to set this up manually, but I don't have the time to wrestle with it now.  EXTREMELY disappointing that LG has an app that doesn't even recognize its own LG products!   By the way, I know lots of computer experts. When you're ready to hire one that can program apps, let me know.