My app offers two subscription plans:
- plan A: 10 €/month, 15 days of free trial
- plan B: 20 €/month, 15 days of free trial
I am using Stripe's Customer portal to let users manage their subscription to my app.
If a user upgrades or downgrades his plan during his trial, the doc says that the trial ends immediately.
How can I port the trial days left to the new plan?