Fix DataForSEO API Connector

My DataForSEO connector refuses to fire a single request—it never even reaches the API. The failure happens right at the call-out stage, not during authentication, and I’ve already double-checked that the credentials are valid... (Budget: $10 - $30 USD, Jobs: API, API Development, API Integration, Data Analysis, Data Management, Debugging, HTTP, Software Development, Software Engineering, Web Services)