PS 4.5.4 will not all listing of shipping choices

I have updated to PS 4.5.4

I would like to offer shipping choices for my customers for "First Class" or "Priority" via US Postal Service in the Shopping Cart.
I have applied for and received a US Postal Service API and updated by settings in admin

In addition I would like to set up a feature so that if a customer purchases total $100 or more the shipping will be free.

I am also having a problem with the tax rate appearing in the shopping cart.

I have attached a picture of what is currently appearing in a customer shopping cart.

I hope you can help me in this matter.

Shipping and tax never appear until after they return from paypal since they are based on the shipping address which you don't know yet. I went through that and I see tax charges, but the shipping still isn't showing. I'd need FTP access to debug this further.

I can't seem to get in with the FTP information provided. Please test it and make sure there are no IP restrictions in place that might be causing it to not let me in.

USPS uses weight to determine shipping costs and your product weights were set to zero, so no shipping rate could be calculated. I added code to only allow free shipping for orders over $100. That isn't normally an option, so I had to hand code the update in the shipping plugin.

First Class shipping is only available for certain items. You can send standard postcards, letters and large envelopes and small packages up to 15.99 ounces using First Class Mail. If your First Class package is over 15.99 ounces, you must upgrade the mail class to Priority Mail. If the purchase is over weight then it will not show the first class option.