Share 'Selmi Plus 2010 model Trouble Shooting'

I have a used 2010 Selmi plus and plugged it in and pushed the black start button and all the windows says is ALL PRO.  It won't start I can't change the temperature I'm afraid to add chocolate in case it won't work.  I followed the instructions and pushed prewarm command (and it starts warming up the bowl and there is still some chocolate left in the bottom from the people I bought it from); the…