Thanks for writing in!
If I am not mistaken, I have checked your site which you have associated with your Pro license. I can see that there is no caching or CloudFlare being used.
You may be experiencing PHP memory limit exhaustion. We recommend that you increase your memory allocated to PHP. To increase it, please edit your wp-config.php file and insert these lines:
define( 'WP_MEMORY_LIMIT', '256M' );
define( 'WP_MAX_MEMORY_LIMIT', '512M' );
You can add it before the line
/*That's all, stop editing! Happy Blogging. */
And if still it does not load, please provide us access so that we can investigate further.