App doesn’t work. It acts like it is going to connect and then my phone screen goes dark and the code changes. It won’t allow me to sing into the phone to connect to the game. Bought 2 USB mics and they won’t connect either. Very frustrating to have a product that won’t work. Purchased it digitally. My wife just left the living room because “call me maybe” was left playing on repeat while I tried to find a solution. When it was working I had to sing the lizzo song in order to advance in career mode. I have young kids and prefer not to say some of the vocabulary used in the song. Now I’m sitting in my living room all alone with a game that doesn’t work knowing that if it finally does I can’t complete it in its entirety anyways. **Update: app began working with my phone the morning after the night that it didn’t. I plugged a usb mic in and it worked whenever the phone was connected. Turns out my phone was just picking up what was being sung into the mic. My son used his stuffed yoshi as a pretend mic and it worked perfectly. Changed my review to 2 stars. ***Update: still have issue with LetsSingCompanion occasionally, internet seems to be working just fine in these moments. When LetsSingCompanion is working through my phone, which seems to be usually, it works perfectly. Occasionally it will disconnect. Note: I shut down my switch, plugged in the usb mics while it was in power down condition, (this would not be sleep mode) and started let’s sing and both sub mics worked. It was the only way I have found to get them to work on my switch.