I am attempting to connect to Hubspot using a Rest API Get. An account in Hubspot was set up for me as I do not have access to that portion. They created a Rest Dynamic OAuth2 Account. The account in hubspot is set up using the Private Apps guidance in developers.hubspot.com. When I link the account to the Rest Snap and place my url I get the following error message:

Failure: Failed to execute HTTP request, Reason: Connection reset,
Resolution: Please check the Snap properties.

Am I missing something in my configuration? or is this a firewall issue? What does this error mean?

Help!