The problem seems to be in my tweaked store, not in MZMT and Zones rates, as it works fine on original 1.3.0.1 zen cart store.
I've got to figure out what causes problem or else have to again work with original zen cart 1.3.0.1 from scratch, and it's labour-intensive.
To solve the problem, I'd be much appreciated if anyone could show me the way these modules and Zen Cart interact since it appears that, in my store, MZMT and Zones rates cannot find the number of the products in cart and show the zero (0) number instead. By the way, other shipping modules (come with zen cart) work fine.
Thanks and best regards.
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