Having issue trying to update WPMU Plugins

Hi, I am trying to update your plugins on my site: http://j9designs.net and having some issues doing so. I reached out to my hosting company and they tried to help, but told me it was son your end. This is the error code they said to share with you:
Updating Plugin Defender (1/3)
Downloading update from https://premium.wpmudev.org/api/dashboard/v1/download/1081723/2da8a6db649cbc14d52cfc68566b7dd85a2f6630…
An error occurred while updating Defender: Download failed. cURL error 6: name lookup timed out.

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