I used the tutorial "Microsoft Edge Tabs - Pin and Unpin in Windows 10" - "How to Pin and Unpin Tabs in Microsoft Edge in Windows 10" and was able to pin my go-to websites. Yea! Just click and go directly to the web page.

Alas....when I closed and re-opened Edge, they're all gone. How do I get them to stay pinned?

I'm on Win10 + Anniversary upgrade.