i remember harley24 was doing like 25 blueberry autos and like 15 of them wouldnt flower and stayed in veg for an extended amount of time!

it was so bad he had to cut his hours back to 12/12. Threw off his whole timing! so he had half his plants in flower and half in veg!!   

Autos arent foolproof! Thats why i wouldnt recommend them to a beginner