Be advised that Monitoring is for Google-initiated updates to only the following core details groups of your Google Business Profile (to the extent that each actually applies to your Profile):
A Monitoring subscription is active until the end of the calendar month in which the service starts.* It is not automatically renewed from month to month: In order to maintain Monitoring service for your Google Business Profile in any subsequent month, you will need to manually submit a new subscription request here.
*It will be most cost-effective for you to start the Monitoring service at the beginning of a month, as we don't prorate the monthly fee on account of a partial month, though you may choose to start the Monitoring service at any time.