WPMU Dashboard HTTP Error: 403 "Forbidden"

Hi there,

I have WordPress website and i installed WPMU Dashboard with WP Smush Pro, but when i login from WPMU Dashboard it gives a error: (Please check the attached)

I contacted the host they said wmpudev.org might have blocked your IP, because it's returning a 403 when I try to wget from the server.

Please see into this issue ASAP. I really need to install and start using the plugin.

Thank you.