Nan optipro 1 made in netherlands

Hi, mommies has anyone using Nan optipro made in Netherlands here, I am currently using it try if my baby good with it but his poop becomes green and he poops after 3 days, he will also play with his milk although his reflux is much more better now than last time he is 2 month old, do u think the Australia and Singapore optipro almost the same? If not will switch to other brand if he is not gaining welk