Hi Jorge,
Thank you for buying our theme. We hope it will meet all your expectations! 🙂
My best guess is that your website didn’t have enough allocated memory which was the cause of this error. Please try to raise the memory limit by adding those two lines of code in your wp-config.php:
define( 'WP_MEMORY_LIMIT', '256M' );
define( 'WP_MAX_MEMORY_LIMIT', '256M' );
Then, can you please tell us if this issue still appears?
If this issue is not solved with this snippet, this leads us to believe there might be an issue with the server itself. In that case, our advice would be to contact your hosting provider and explain that you are having an internal server error. If they try redirecting you to us, please ask them to provide the Apache logs for us so that we can take a look at those.
If you would like, you can also try to install your website using a different hosting provider to see if the problem is the same, as that would be a good way to find out if the issue is caused by your current host.
Hope this will help you solve this.
Best,