Hey Annie I'm Hasan a Shopify and Replo expert.
1. You can't connect or use Replo with other platforms like wordpress. Replo is only for the Shopify e-commerce platform.
2. Hostinger is not CMS, it's a Domain, hosting platform where you can buy a domain or hosting. I think your website is running on Wordpress. If you show me details, i can help to understand.
3. If you want to use Shopify, you can connect your domain with Shopify from Holsinger.
