If the images fail to show up on your website after its migration, you can easily solve this problem by enabling allow_url_fopen in your PHP configuration and then follow these steps:
Create/Open php.ini file under the public folder of your domain.
Add the following lines to enable above php functions
allow_url_fopen = On
Contact us or submit a ticket if you're having difficulty performing any of the above steps. We will be happy to investigate this problem and see what we can do to help.