Make add-ons and configurations to existing website

Website: shop.snutekassen.no. Using Woocommerce and Woocommerce subscription, delivering subscription-based dog- and cat-food solutions. You have to have deep understand of Woocommerce subscriptions as you have to do coding in the core-functionalities of woocommerce and woocommerce subscriptions You need to know 100% that you are able to perform the tasks in a high quality manner Module 1: My Accounts function: Posibillity for the costumer to change the "recurring schedual" in woocommerce subscription from my account (Change between: every 2, 4, 8, 10, 12 week) Module 2: Delivery date: 1. Create a backend plugin where we can preset multiple future delivery-dates manually. 2. Add a field in the checkout where the costumers should be able to choose a start-date for their subscription accordingly to the future delivery-dates. 2.1 Let the chosen start-date trigger the start date for the subscription in woocommerce subscriptions Module 3: Posibillity for the costumer to pause their subscription from my account 1. The pause function has to work in a matter where when the costumer clicks pause, he/she is forced to click a "from date" - "to date" from a calendar. 1.1 The "to date", should trigger the same datechange in "Next Payment" under Woocommerce -> Subscriptions. The change should first happen when we reach the chosen "from date". 1.2 The Costumer should not be able do any changes on deliveries that are deliveried in < 8 days. 1.3 The customer should only be able to choose new dates according to the dates that we have set as deliverydates. Module 4: Extra subscriptionstatuses: Add a plugin in woocommerce were we can add new subscriptionstatuses; We want to add a status called "Langsiktig pauset". This status should trigger the same action as if they are put "on hold". Module 5: Auto-complete orders: 1. Auto-complete all orders that isn't payed by Stripe. Module 6: Export info subscription: Check out the the specs from the two sheets in the attached excel Less