I'm trying to make a map experience using a Web Map that I've made with a hosted Feature Layer that I created that will filter a table based on the selections made on the map, or filter the map based on selections made in the table or using the Filter Widget. However, when I select the features in my map they do not filter down in the table:

As you can see, I have 82 selected features within the map, but the "Show Selection" button in the table is grayed out and unavailable to click.
The same issue happens when trying to use the Filter Widget:

The filter works on the table, but not on the map.
I think that the issue is that my web map shows as not having any layers when viewing it in the "Add Data" tab:

As such, this means that I am unable to select the layer within the map to use for the Table or Filter Widget, and cannot use it for Widget Actions.
Is there a way to fix this?