Hi,
I have an app that offers auto-renewable subscriptions and I would like to increase the subscription cost but I'm not sure how to handle existing customers. Let's pretend for a moment that I currently have 100 subscribers who paid $9.99/year when they first subscribed, what would happen if I increase the subscription cost to let say, $19.99/year in the middle of their payment cycle, are they going to be notified before the next renewal date and give them the chance to cancel or it will just auto-renew automatically without letting the user know about the cost increase?
Thanks!