I had the same crack as everyone in this thread and had it repaired at a Subaru dealer for ~$200. Now a month later I scraped asphalt going probably 3 miles an hour and the crack has reappeared
I'm not sure what I should do at this point. It's so frustrating that these cars can't have even the smallest force put on the bumper. My 2004 WRX went through tons of **** and I never had a problem with that bumper.