About 4 days ago, Amazon Prime Video app stopped working. Netflix and YouTube apps work fine. I have tried everything suggested by Amazon and other sites: deregister device with Prime, reset Smart Hub, power down TV, reinitialize Smart Hub, restore and deregister Prime app. Same symptoms every time. Prime works once but only that first time. After that, every time I try to access it, it goes into a loop: It gets as far as the profiles screen, then the screen goes black, and then it shows the Amazon Video logo and “loading” again. Over and over and over again. Have chatted with Amazon, and all they tell me to do is deregister the device. I need another solution. Prime app is Ver 3.60205 2020-10-07. TV software is ver 1110.