What settings are you referring to?
When I start Edge, it opens the tabs I've designated to open on startup. To do that, click the 3 dots in the upper right corner, select Settings, select On startup. From there, you have the option to have Edge open a new tab, continue where you left off or open specific page/pages. I opened my desired pages to load on startup and then under "Open a specific page or pages" clicked "Use all open tabs". Works perfectly for me.