Subscriptions with checkout API, preview is blank

ok, adding quick_pay instead of order, it’s now working…

However, I’m trying to test out a subscription with a free 7-day trial, then a monthly cost after 7 days. This isn’t clear on the payment page now, it just says $0 … it’s really not clear to the end user that it’s $X after 7 days.

Please advise… Thanks