Download options. Courespress pro

Courespress pro keeps saying server "server error: ok [200]. I'm using localhost. Is there any other way for me to install/download the plugin? I searched on google this link came: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&cad=rja&uact=8&ved=0ahUKEwjCx5X6g6XOAhXHFj4KHdfbCGwQFgg9MAQ&url=https%3A%2F%2Fnull24.net%2Fcoursepress-pro-v1-2-6-6-wordpress-plugin%2F&usg=AFQjCNET2juwjDiOfahIjfvdkQkSrOnUtQ&sig2=XddbmfsO5vby2M2-Ao71Kw
is it legal? Please advice..