Hi @rebeccapeterson,
I can see the issue. Though there’s no information on the error on the console. There are mixed content errors for the images but that might be unrelated.
There’s no child theme so this is not a result of customization.
I then tried to assign it on another pages to make sure this is not a result of mismatch html. The same issue exist.
I also add a test blank header and that’s where I saw an error. Preview timeout
Checking your setup, you do have a lot of plugins. 20 active out of 39. Can you please make sure that memory is enough for this setup?
You may increase your allocated memory by adding this code in your wp-config.php (https://theme.co/apex/forum/t/troubleshooting-increasing-php-memory-limit/16935)
define( 'WP_MEMORY_LIMIT', '256M' );
define( 'WP_MAX_MEMORY_LIMIT', '512M' );
You may also check on your Wpengine setup if memory is enough. Let us know how this goes.