your new shipping rule is not set right.
The only new shipping rule i see i "Product Shipping" which is set as triggers: More than 1 item in the cart. Calculation: Total of shipping + 0.
You need to create the rules as I originaly outlined:
Under 25:
Triggers:
Taxable Total For the cart:
if the taxable tatla for the cart is "<" a value of "25"
calculation:
Flat rate of 5
for the first one.
For the second one:
25 - 50:
Triggers:
Taxable Total For the cart:
if the taxable total for the cart is ">=" a value of "25"
AND
Taxable Total For the cart:
if the taxable total for the cart is "<" a value of "50"
calculation:
Flat rate of 10
etc...