I understand you’re experiencing a critical issue with the Conversation Flow editor where you cannot edit, delete, or add nodes. Based on recent reports from other users, there appears to be a known issue affecting the flow editor.(1)
Other users have reported similar problems, including an “Error: Parameters Must Be Object” that blocks conversational flow editing.(1) Users experiencing this issue tried logging out/in, clearing cache, and using different browsers without success.(1)
In one case, a user had to create a new agent from scratch and copy everything over because the issue persisted and they needed an immediate fix.(1) The Retell team has acknowledged these issues and indicated they are working on fixes.(1)
For your specific situation, I recommend:
Try the basic troubleshooting steps if you haven’t already (clear cache, different browser, log out/in)
Note your agent ID - this will be helpful for the support team to investigate
As a temporary workaround, you may need to create a new agent and migrate your configuration