I have a default sidebar with links, post archive, etc. But I wanted to add a few more things I didn't have (widgets). But when I drag and save a widget to the sidebar tab, then look at my website, the whole sidebar links have been deleted except for the widget I added. When I take the widget off, everything is back to normal.
How do I add widgets to the sidebar, rather than replace everything?
The blog I need help with is theocentrist.wordpress.com.