What happens if I have a non-WordPress site at the same domain?

The simplest answer is that “it’s complicated.” Having multiple web apps at the same domain may or may not be problematic. Because the whole domain must be pointed to QUIC.cloud, the WordPress site will be fine, but any others at that domain could potentially experience caching issues, especially if they are running other web apps that use LSCache, or there are special rules in the .htaccess file that must be followed.

If possible, we recommend putting each site in its own subdomain (for example, blog.example.com instead of example.com/blog, or forum.example.com instead of example.com/forum). This way, you can point the WordPress site’s subdomain to QUIC.cloud without impacting any of the other sites living at that domain.