Integrating Jotform to Salesforce

I tried to integrate Jotforms into saleforce, I cant please see error

Note that our Salesforce integration is based on Web Services API, and that API is available for their Enterprise and Unlimited packages only. You'll need to upgrade your account if you're not on these packages in order to use our Integration.

If you're already on the Enterprise or Unlimited Package, make sure that API is Enabled to your account, you can check it through this steps:

Click on your Name > Setup > Profiles > System Administrator > Administrative Permissions > API Enabled

Thanks