A: Yes. Here's more details on connecting to an MCC "Manager" account:
https://help.fraudblocker.com/en/articles/7065503-how-do-i-connect-a-google-mcc-account

Once you join your MCC and then "Sign in with Google" you'll see all of your child accounts and you can select which one you wish to connect to. Note: you cannot connect a single child account to multiple domain names in your Fraud Blocker account at this time (we'll allow multiple soon - see our roadmap)