Options are showing on desktop and not mobile

By default, Shopify apps load after the page is generated, to ensure that options are loading and displaying on mobile we recommended adding the faster loading script to ensure the app and options are loaded promptly on the product page. 

1. From your Shopify admin, click  Online Store to arrive at the Themes page.

2. Find the theme you want to edit, click the Actions button, then click Edit code.

3. Click on the theme.liquid file that's located in Layouts folder.

4. Paste the following code snippet after the <head> tag.

<script src="//d1liekpayvooaz.cloudfront.net/apps/customizery/customizery.js?shop={{shop.permanent_domain}}"></script>

5. Save your changes.