You must inform the managers as tracking signatures or avatars is difficult and it is difficult to confirm that you were in the campaign until the last day, or at least you can wait until the end of the week in your previous campaign before moving on to a new campaign.
There is a disclaimer in most campaigns, so even if you are not paid, you cannot do anything as the campaign manager can accept or reject any post.

I don't see your name in the signature campaign spreadsheet so you probably won't get anything.