I need to click OK on a pop-up window, but right click is not working when the pop-up window is open (I can't inspect the element). If I leave Inspect window open, there is nothing happening. Please see the screenshots.
I haven't tried much as I don't know what element it is. I guess this website is using Java, I'm not familiar with it.
That dialog is not HTML, it's a JavaScript alert. You need to switch to the Alert and then Accept it.
Code sample
Sub Test()
Dim popup As Selenium.Alert
Set driver = New Selenium.ChromeDriver
With driver
.Get "http://the-internet.herokuapp.com/javascript_alerts"
.FindElementByCss("button[onclick='jsConfirm()']").Click
Set popup = .SwitchToAlert(Raise:=False)
popup.Accept
End With
End Sub