Beef and pork are not allowed on the diet because they cause ammonia.
The maltodextrin is a form of sugar and should be avoided.
Pumpkin seeds in general contain small amounts of mold and should be avoided like other nuts. When you are onto phase 2 you can start to have these more often. The sunflower seeds really set me back on the diet and don’t recommend the use of any nuts or nut products.
The buckwheat bread sounds completely fine; wish I had some!