For Cloud Monitoring you can try and take a look at https://documentation.meraki.com/Cloud_Monitoring_for_Catalyst/Onboarding/Cloud_Monitoring_for_Catal...
In order for it to work, you need to make sure that a number of requirements are met, such as IOS-XE version, configuration etc.
In regards to Cloud Management, as far as I'm aware, it is not yet supported, although it is already announced. You should only configure Cloud Managemet, if you are in direct contact with Meraki Support and the PM team.
Personally, I'd give Cloud Monitoring a few months to mature. I've seen a fair amount of posts here on the forum where Cloud Monitoring didn't go so well.
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