@Wylfritz_Tyson Ok. Then you can Try this :
Use Attach Window on the Export Results Window : Make Sure the Selector of the Atttach Window is Dynamic if there are varying names.
Use On Element Appear Activity inside the Attach Window.
Then use Click Activity on Close Button inside the On Element Appear Activity.
The Selectors for the On Element Appear and the Click is the same.
But Also add the name property into the Selector.
Check if these Steps Work