Imports of reviews are done as a background, asynchronous process, that requires your site to make requests to itself for information. As such, your site cannot block HTTP requests or imports will not begin to process. If your imports freeze without completing, your site may be blocking HTTP requests in some way.
Here are some common reasons why your site blocks HTTP requests:
- Are you using a maintenance mode or blocking plugin? For example, a "coming soon" or "maintenance mode" plugins will block HTTP requests. Please disable the maintenance mode plugin to process imports.
- Similarly, if your site is behind BasicAuth, background requests will fail to complete. For example, WP Engine staging sites often use basic authentication to block site access (you see a popup for credentials when you try to access the site). Please refer to this information to correct this issue, or disable basic authentication while running import of reviews.
- Also, some hosting companies will block the requests from servers to themselves. Your host must enable requests from your site’s server (the plugin) to itself to start processing a file (sometimes called a “loopback connection”) for review imports to work.