Background of the issue:
I was trying to use the Multi-currency plugin with a discount setup in the Flycart plugin, where 2 items get 15% off and 3 items get 25% off. I added an item to the cart, increased the quantity to 2 and 3, and then decreased it back to 2. The issue can be seen on this page: hidden link.
Symptoms:
When I decrease the item quantity from 3 to 2 with the Multi-currency plugin enabled, the discount and price are incorrect. Only 1 item is discounted, and 1 is at the original price. Without the Multi-currency plugin, this problem does not occur.
Questions:
Why does the discount calculation fail when decreasing the item quantity with the Multi-currency plugin enabled?
How can I fix the incorrect discount issue when using the Multi-currency plugin?
I have tried to setup the plugin for you to test.
Because we bough the plugin license which provide only 1 site.
I originally want to edit the DB to help installing the plugin for test but I cannot modify the database. It said the DB is protected.
So, what should we do to install the plugin for you to test?