I am ready to “live” with a new website with an expanded store. I purchased your USPS shipping extension . . . but, for the life of me, I cannot get it to (1) give the buyer the right shipping options and (2) accurately calculate the right postage. This is complicated to explain, but I can’t figure out why the shipping options for a 2.5 lb. order (two books) are limited to Express 1 day or Priority 2 day and why “flat rate” options are listed when the books won’t fit in the flat rate envelope. The resulting rates (other than the flat rate which often won’t work for what I am shipping) are extraordinarily high! Even your “demo” site indicates postage of $200+ for a $20 item. Am I missing something? Do I have some setting wrong? Nothing is working as it should.