I Prefer Craft Coffee review for Shopify Subscriptions

Too many glitches. Works sometimes. Needs serious improvements. 1. If payment failed and customer updates their credit card there is no way customer can trigger and approve the payment again, they are left contacting us, we then cancel the subscription and then tell them to make a new one on the site. *Note, Shopify support is not equipped to handles these issues, we just go around in circles since they don't understand their own products. 2. When customer payment fails, no reason is given to us merchants, so we have no explanation for the customer. 3. Customer cant change or move the date, eg if they order every 6 weeks and want it to trigger at 5 weeks and reset the schedule from 6 weeks from manual payment they cant do it. Please work on fixing these issues, otherwise, I am forced to abandoned the Shopify Subscriptions App.