# FAQ

You can find frequently asked questions and their answers here.

A Merchant is contacting me with a problem of CSP (Content Security Policy) and the PrestaShop Billing frontend component does not load. What can I tell them ?

Here is an example:

Note that the PrestaShop Billing frontend component is a "Cross Domain Component", which means that it will be loaded in the merchant's browser as a secure Iframe referencing our domain prestashop.net (or prestashop.com). You (or the merchant) may encounter some problems loading it if the shop where your Built for PrestaShop module is installed is using CSP (opens new window) in their HTTP response headers. Make sure *.prestashop.net and *.prestashop.com are added to these values by communicating these informations to the merchant installing your Built for PrestaShop module.