Uninstalling the Pickzen SDK manually from Shopify
If you uninstall the Pickzen app from Shopify, we won’t able to manage your site anymore. In case the Pickzen SDK was still installed, you’ll need to uninstall it manually: go to Themes under Online Store and click on Edit code under Actions:
Select the theme.liquid file and remove the two lines selected bellow that were added automatically by the Pickzen app:
Once removed, click on Save and Pickzen will be completely uninstalled from your Shopify.