I solved it myself after many,many hours and experimentation. My problem was my fault. My mindset was that small dimensional packages are efficient and save money. Wrong , too small equals under the minimum size requirements for USA shipping. If you look at the minimum requirements of the parcel dimensions and make sure your packages are at least as large as the minimum, the calculator will work ie Expedited U S A minimum is I believe 21cmx14cmx5mm. Be equal to or larger than these sizes and it should work on the calculator. default to parcel or envelope, don t pick a parcel size. Good Luck.