Salesforce integration- fields not getting pulled through

[CatherineB8686]

Hello, I am attempting to connect our Salesforce org to our Constant Contact account. We set up a new user to use for the API integration, with a profile type of Salesforce API Only System Integrations, but when that account gets connected I receive the error: "Could not get Salesforce Fields. You may need to upgrade your Salesforce account." Can someone please advise on how to get this connection working properly? Thanks, 

[William_A]

Hello @CatherineB8686 ,

The following Salesforce versions are supported for this integration: Professional (with Web Services API access), Enterprise, and Unlimited. If your SF account is one of these three types and you're still unable to connect the integration, please call our general support and request a transfer to the Tier 2 integrations support team. 

For more info on connecting the Salesforce integration