Im getting errores with the Agentforce Test Center

Hi!, I'm dealing with the trailhead https://trailhead.salesforce.com/content/learn/modules/agentforce-agent-testing/set-up-testing-criteria?trail_id=become-an-agentblazer-legend-2026

and get stuck with the enable of the agentforce test center. I created the org, linked it and turned einstein and Agentforce (Default) but when i search for the Test Center i'm not able to see it.