I can't update my WPMU DEV Dashboard plugin. I tried both from within the site itself and within my WPMUDEV control panel, which told me it got a 404 error not found. The domain is demo10.mjdwebsites.com.
If it helps, this site was developed by a developer who uses your plugins, and I changed the membership info to ours by logging out and logging back in with our credentials. The site has been added to our list of websites, and I was able to update two other plugins.
Your help is greatly appreciated.