Why is my account set back to bronze

Hey guys, emmmm something weird has happened to my account, I passed bronze and silver in the january usaco contest, so my account should be gold division, and indeed it was for the last few weeks. However, when I checked this morning, my account is set back to bronze

  1. what is the potential reasons? is there something wrong with the website, or am I identified as cheating?
  2. has anybody experienced similar events?

Please email the contest director (bcdean@clemson.edu) if you come across any technical problems.

That happened to me too, I just mistakenly finished the wrong contest, what do I do?