Hi there, The day I received this scope, I downloaded the app and followed the directions and it worked great. Super impressed with the scope! Since that day, when I plug it in it says the app is closing abnormally and will restart soon. I have uninstalled and reinstalled the app several times. Any ideas? I an using a Samsung S10. I think its a phone issue and not a scope issue? Which endoscope app did you all use? Thanks for any suggestions. Also, I emailed Teslong and I am waiting for a reply. Thanks