Adsense Widget

I am trying to get adsense to show up on my site on the right hand side bar but all I get is a little black dot. I installed the widget and put my google id code in where it requested it and also created a google ad in adsense. I’m not sure what else I need to do. I know there is code I can copy and past form adsense but I can’t find where I would paste that in

My site is https://www.serendipitini.com/