When checking the Acquia Connector settings page it says that it is connected to Acquia, but data is not getting sent.
Open the Acquia Connector Credentials page http://www.domain.com/admin/config/system/acquia-connector/credentials,
Then check the credentials on the Acquia Cloud Platform Page i.e. https://cloud.acquia.com/a/applications/xxx-xxx-xxx-xxx/settings/keys.
Make sure that the credentials added on the site are similar to the ones provided on Cloud UI, if not add the correct credentials and then connect to the subscription.