ELAVI review for Shopify Subscriptions

Please allow multiple shipping options! We have different shipping tiers on Shopify so I don't understand why that can't just carry through to Shopify Subscriptions since this is all under Shopify. Also, we have tried importing our subscriber list and since the shipping price is wrong, we were told to delete the app for 72 hours to clear our list and start over. Did that and canceled subscribers are still showing up in our contracts dashboard meaning we have duplicates inhibiting us from selling subscriptions to customers. Support - please help!