HELP problem with Input and volumen Led

Hello, my unamplified Kemper head has started to have problems with the volume LEDs, the first 2, starting from the bottom left, do not light up. But the most important thing... Today the Input jack failed, when I played my guitar intensely, it cut the volume (as if it had a volume limiter), the input LED went from Blue to off, and when the volume of the guitar becomes less intense again, it sounds again... it didn't do it before and now it does. I connect the guitar to Alternative input and it works there, if I make an effects loop and connect the guitar through the Return it also sounds normal. I currently have the latest OS installed... could it be an OS failure? Even if I restart it, it doesn't change... today I turned it on 3 times... The first 2 it sounded normal and the last one it started to give the error.