My husband is on dialysis and I am getting confused as to the things he can not eat.?

He went into acute renal failure on Memorial Day (35y/o) He is now getting dialysis 3 times a week. We have spoken with the nutritionist there but from the lists she gave me to the lists on the kidney site for people with dialysis they differ greatly. Just one point is nuts. on the list of do not eat it says under high potassium no nuts/peanut butter. but I went to the kidney website for a dialysis menu and the snack said mixed nuts. So I am totally confused. They also told him to eat alot of protein/meats etc but all the menu's have chicken turkey etc. They also said to stay away from wheat based foods but in the breakfast they have wheat as part of a cereal mix. I am soo confused as to who I should listen to if you have any suggestions that would be great. He has other issues besides the kidney failure he also has pericarditis (fluid around the heart) a blood clot in his leg, and high blood pressure for which is is on medicine for all of these. but there was not restrictions in eating from them. well except for the salt but that is part of the dialysis do not eat anyways.