As far as I'm concerned, I do not see any visible cracks. What do you mean by heater cover? The metal pieces surrounding the heating element did become loose when I turned the unit upside down to empty it out of crap, and that piece fell with that. I did not successfully put it back on, and figured I'm probably better off letting the warranty handle it because I don't know how to fix it correctly, and don't want to make it any worse than it already is.
The first thing I checked for after it was cooled down was for any cracks. I'll go up and check in a few minutes (making some ramen real quick) and reply with an edit of when I look at it directly in the light. I am able to pull and push the heating prong down and up, if that has any merit. It's not too much, but it's moving down there so I don't know if something happened in the lower part of the unit. I am still awaiting a reply from their customer support.
Edit: From my visual, I do not see any cracks in the heating element, nor any of the glass. I have taken a few pictures from my webcam to show you what I mean by the metal pieces having fallen out and just to show in general to see if anything is visible to anybody else.
(Notice the metal pieces not being in there securely.)
(A closer look at the prong)