@JonasResende we see this all the time where it goes from green to yellow and sometimes red. It doesn't affect connections that are already up, but it would stop new connections being made while it was disconnected.
How often do you see it completely disconnected, if more than occasionally you can raise a support ticket to be moved to a different cloud server.
We were going to do that but it calmed down and we only occasionally see red now, and it has never affected the site to site connections.
@JonasResende Are there any messages in the event log? The VPN registry connection is only required to first establish the VPN tunnels, and then when the keys are renewed. So the tunnel will stay up even if the VPN registry connection is lost.
You can sometimes lose registry connectivity if the Meraki registry server is overloaded, and you’ll likely be able to see that in the log - lots of registry connectivity losses and connections. Of course, it is just possible that there is something upstream blocking the connection - the VPN registry uses UDP ports 9350 and 9351, and you can find the IP addresses for your org., buy looking under Help -> Firewall Info.