Dos si dos auto first time growing

Little summary 2 pineapple chunks survived 1 critical kush auto 1 dos si dos auto I don’t know what is going on with dos si dos auto from Barneys Farm . I had 3 free sample seeds only 1 germinate . 2 died naturally (8100150 batch ) I had problem only with dos si dos auto Other seeds from Barney germinate very fast (all germinate in one box so I know that something was wrong with seeds because 4 germinate properly only 2 dos si died)