My effects pop up panel is off the screen in a place where I can not drag it back. I have tried restarting Indesign, restarting the computer, re-installing InDesign, playing with the resolution of the computer displays.
What format are you outputting to?
And if you are using two monitors, try unplugging one for a moment, restarting ID and opeing the panel.
Sorry to hear about your experience. In addition to the suggestions shared by Bob & Peter, I'd request resetting the preferences of the app. You may follow this help article to do that. Let us know how it goes.