intervals sometimes frozen
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 Hello guys, it happened to me a few times that 
 1.) during weight training I started an interval , but after I pushed the button the screen does not changed. So I pushed again and the watch just jumped to the next interval (or may be to the phase int. or recovery, I don’t remember exactly )2.) a few times happened to me, that the last stage (10/10) did not started to count down. At least nothing changed on the screen 
 –> here I have some pictures as well
    you can see, time is passing (50’27 --> 50’29 ) but the counter is still showing 30 sec.