Whether you are trying to connect to a different Shopify store, or need added permissions for new features, you can reconnect Shopify by following these steps:
1. Log in to Paywhirl at https://paywhirl.com/login
2. Point your browser to https://paywhirl.com/shopify/oauth?force=1 (copy and paste the URL into your browser bar directly)
3. Type in your Shopify domain and click "Connect to Shopify"
4. Follow the prompts until you are brought back to the PayWhirl website.
5. Edit all the existing plans in Dashboard>Plans>Edit and click the "Sync with Shopify" button on the right.