SNAP disfunction


I was trying to use the SNAP platform and it just shut down, it’s like staring at a totally blank window, it doesn’t show anything I had saved, any images I was using and I cannot close the window pressing the “x” button, neither right mouse click and “close”. Doesn’t help signing out, nor waiting. I cannot do anything and didn’t press anything so that could happen, it went blank all of a sudden. Do you have any idea what I can possibly do to fix this, so i can continue working? I’m new here by the way.