Just purchased this discount order total extensions. But i have some problem with the way it displays taxes... ??

So the numbers on the order total adds up right, regarding add and subtract following the rows, but
with these calculations i over charge the costumer (and myself) with total amount ( 5 ) and tax ( 4 )
Tax (moms) should be = 43
Total should be = 213
I made the same discount 10% and activated the coupon order total, and deactivated the discount order total
Here i get the right numbers:

Anyone know how to implement the tax calculations from coupon order total to the discount order total, or are using another discount order total that do the trick?