If you're entering the correct code when trying to post a crush but it keeps telling you that you're wrong, make sure you have cookies enabled on the device you're using. 

If this still doesn't fix the issue please contact us so we can work through it and figure out why it isn't working so we can get it fixed for everyone else in the future! (This is an issue that has been happening, but as far as we can tell it's just an issue with cookies being disabled)