There is more attention to this issue on Reddit where some other Meraki employees appear to have chimed in https://www.reddit.com/r/meraki/

I finally got through to Meraki on the phone - they said the Client VPN issue is due to a certificate error on their end and they are working on getting an official service status notice out soon

You are not going mad - Client VPN has been down for the past hour or so when authentication is set to "Meraki Cloud" ... Meraki are yet to acknowledge the issue but I have 6 clients across 11 sites that can't use VPN during working from home  ... t...