Wedding wire issues??

Has anyone else had problems with the app/website lately? I’ve had clusters/an overload of guests coming to our wedding confirming their attendance all at once in the middle of the night or usually around 3pm but when I reach out to them to confirm if they actually rsvp’ed they say they didn’t rsvp yet…seems like the app is automatically confirming guests attendance..help? Or any suggestions on what I should do because this is adding more on my plate having to call everyone all over again to confirm their rsvp