I was about 20 rounds in on sat loading 6xc and I heard a constant beep , it was my auto charge ,I pushed buttons, cancel didn't work I couldn't turn it off. I had to unplug it to get it functioning again. This time I turned it on, calibrated it and just waited sure enough a few minutes went by same thing buzz and frozen. I unplugged it , and tried again now this time it didn't beep. Has anyone had this issue ,what was the outcome.