
It is not actually pulling content live from those websites.
In Copilot Studio, when you add a website as a knowledge source, it doesn’t browse it in real time. It uses content that has already been indexed (via Bing). Microsoft says you need to turn on Web Search if you want “real time, up-to-date information.”
https://learn.microsoft.com/en-us/microsoft-copilot-studio/knowledge-copilot-studio
I solved this by using RSS feeds instead of trying to pull directly from the website.