Fridge problems - frigidaire. I purchased a frigidaire side by side a month ago and have noticed

Question

I purchased a frigidaire side by side a month ago and have noticed even though I keep the freezer at (-3 F) the items in the freezer are soft to the touch. Now everything is thawing. The freezer is at 36F and the fridge is at 48F. I try to change the temp to a lower temp but it will not cool. The unit is only a month old... any tips? Thanks