Since the Chrome 59 release for Mac OS, the display for the Ottspott desktop app notification is different.
Before this new release, the Ottsoptt Desktop app notifcations looked like this :
After the Chrome 59 release the Ottspott Desktop app notifications looks like this:
To see the "answer " and the "ignore" action you have to click on the "More" button with the arrow.
If you would like to keep the old display please go to this url with Chrome :
and select the disabled option.