First, a heads up: I've changed the tags for participants, so that now your tag shows not only your username but also the characters you've claimed (or the name of your fandom, if you claimed a general series). This means that if you have two claims, you can find the pieces you've done for each one separately. You can check the full tag list here. If you spot an error, please let me know. ^^
Second: It's now March. That means that if you haven't posted since December, or you made a claim in December and haven't posted yet, you need to post by the end of this month to keep your claim active. I'll be removing people from the claims list at the end of the month.
Not sure when you posted last? The tag list should make it easy for you to check. ^_^