At some point COIN switched from a Day/Month/Year format to Month/Day/Year format when listing their campaign weeks. With the help of Strobe yet again (Thanks man!) we were able to identify the difference and correct the format to the latter.
Also looks like COIN fixed those maps, so if you previously uploaded data with broken maps you can reupload to fix that issue.
Also, with yet another thanks to Strobe, we will be working on the ability to delete a campaign (weeks worth of geoclaims). This is for your multiple account owners just in case you upload the wrong file to the wrong account. We will post more on this once we are finished.