Looking for Chicken & Dumplings pointers
I'm not sure about the texture (looseness), especially since those are two different methods. My best guess would be that it's just a flour measurement thing - moisture content in flour can vary, so the best thing to do is look for hints in the recipe about the desired texture (like "It should tear slightly as it falls from the beater"), and increase or decrease the flour to match.

The primary flavors here are salt and chicken, so first just check the amount of salt in both dumplings and broth. For the chicken, you're getting all the flavor out of it by making broth. So make sure you used enough chicken (and not too much water), and that you cooked it long enough. Those recipes use a pressure cooker - if you don't have one, it takes way longer to cook, of course.