Also having this issue. There must be some workaround.
I think it's important to note that coupons *are* applied to trials, however they are not applied to their descriptions.
So if my product normally says this on the checkout page:
Product Price: 5 day trial then $295 (or another product that says: 6 payments of $79)
Today's Payment: $0
And I apply a 50% discount on all payments coupon, the checkout page says the exact thing as above. However once purchased, if you look at the subscription page for the client, or on their 'my account' page it will show:
1 payment of $147.50 (or $39.50).
Note also, if you use a $100 off the first payment, this will only apply to the trial amount ($0 or $1) and not to the first real charge.
Thanks Cory. I did something similar. I think I attached this kind of solution in another ticket.
Ah, it seems the other ticket discussing this topic was deleted.