Every WordPress plugin or theme has a set of minimum requirements that are needed, so as to make sure it works great for you.
Convert Pro too has a set of requirements (nothing much)! Its just a list of compatible versions of PHP, WordPress, PHP memory limit etc.
Here is the list of requirements you need to be sure of:
- PHP version 5.4+
- cURL module enabled
- PHP memory – 128MB+
- Latest available version of WordPress
It is recommended for you to please cross check these requirements. Have all of these and still face a problem? Get in touch!