While testing some features on my site, I created a coupon code for $108.00 off, (no minimum purchase) & it took $110.90 off the order, instead of $108.00. This makes no sense at all. Previous "real" orders with a % off coupon (for the same item) do calculate correctly. So, why would a specific dollar amount calculate incorrectly?
Here's what the order page says:
Sub-Total: $73.80
Setup Fee: $35.00
Shipping (Standard Delivery ($8.95)): $8.95
Discount Coupon: XXXXX: $108.00
Total: $6.85
The math is wrong. The order total should have been $9.75.
Any ideas about what happened & how to fix it?