Absolutely right. The only person who can answer the question with any authority is wetsuit. This seems to have happened to a large number of people (including myself) and speculating about why or how to fix it isn't helpful. Ideally there should be a post on the Facebook, Twitter feed or the site itself to at least acknowledge the issue and/or the reasons why the amount has changed if it's permanent. If it's a bug it should be fixed (like with the recent issue with the lottery) and an additional amount added to your balance equivalent to the amount of lost earnings. I'll not hold my breath though - customer support from the site seems non-existent