Saleforce Professional version refresh issue with PowerBi gateway

Hi gavin007 I'm not quite sure about your issue, but since you mention your professional SF account doesn't have an API, As a workaround, maybe you can try to test your connection with a 3rd party connector. I've tried windsor.ai, supermetrics (which doesn't have PBI as a destination, so you first have to export to Google Sheets and then export to PBI) and funnel.io. I stayed with windsor because it is much cheaper so just to let you know other options. This connector pulls data through the SF API, so maybe it work for you and then you'll be able to refresh your data without using a gateway, just with the incremental refresh. In case you wonder, to make the connection first search for the Salesforce connector in the data sources list:

After that, just grant access to your Salesforce account using your credentials, then on preview and destination page you will see a preview of your Salesforce fields:

 There just select the fields you need. It is also compatible with custom fields and custom objects, so you'll be able to export them through windsor.  Finally, just select PBI as your data destination and finally just copy and paste the url on PBI --> Get Data --> Web --> Paste the url.