Challenge not complete: "Make sure you have created and connected to the Developer Edition org for Agentforce Builder."

Hello I'm referring to the "Build with Agentforce Builder" module. 

I've completed all the instructions listed as part of the hands-on in my Develope Org. 

I've also tested the Agent and it's working as expected. 

However, when I click to verify the channel, I received the following message:  

Make sure you have created and connected to the Developer Edition org for Agentforce Builder."

Any clue? Thank you in advance