"The performance test didn't return any results. This probably means you're on a local website (which we can't scan) or something went wrong trying to access WPMU DEV. Try again and if this error continues to appear please open a ticket with our support heroes"
Sadly the website is not local. I can't update the dashboard plugin either and the error message suggests a file permissions error which is not the case (everything is open to 755) Any ideas folks?