Patreon changed their system a few months ago, and there's a horrible loophole in it now. You can set up rewards to be one-time only. They pledge, you see in your system that their payment has gone through and that they've not received their reward yet. You pack it up, mark it off, and get on with your day.

Next month, they change their pledge. It's technically a "new" pledge, so they pop up in the one-time-only list. You think, hey. This name looks familiar. So you have to go into a completely different page to see their lifetime total, or go searching through your email to see if they've changed their pledge. Next month, they catch on. They delete their pledge and re-do it. They show up as a new name in the system. you think, hmm. This name is familiar. Except now when you check on the lifetime total, it's a brand new pledge. This one shows as the very first pledge, even if they've been there a year.

I've caught a few people doing this. They ruined it for everyone.