[Resolvido] development to production

Hi, I was just speaking with someone but the chat closed before I had a chance to copy and paste the instructions. I need to change the production URL back to development URL but I can't see how to do that. Basically I wanted to transfer ownership to the client so they could start paying for credits however I realised that in doing that I had to change it from development to production, but the URL I used was the same for both.