Shipping based on weight not reflecting in cart

Hi there, I was hoping to go live tonight with my store, but I have discovered a glitch that I can’t fathom how to fix. I’m using the Marketpress Ecommerce plugin and am having shipping by weight issues :slight_smile:

I have the shipping costs set up as weight-based with 0.01 and above being free both locally and internationally. Thereafter it goes up in 100grams with increasing shipping costs. I’ve tested it on a few products, but no matter what weight I put in, it simply does not reflect any shipping costs at all. Nothing in the cart or at checkout. I’ve tested right through the entire purchase process and it simply does not show. Please help, as my website is hanging on this one thing!