Discounts do not apply on other currencies

I have a multicurrency website and I’m using woocommerce currency switcher. Discount Rules Plugin works on my local currency perfectly.
However for my second currency, it shows the discounts correctly on shop and product pages… it shows discounted prices on cart details… but shows the cart total without the discount and proceeds to checkout without discount.
I had to add smart coupons to checkout for the second currency as a temporary solution but I need to fix this as my initial goal is to give product discounts, not cart discounts.
The source of the problem might be that I have fixed price rules enabled on Currency Switcher for the second currency. I think this is blocking the calculation. I enabled compatibility for the currency switcher. Is there a way to make discount rules work with Fixed Product Prices on other currencies?

The page I need help with: [log in to see the link]