Sandy isn't setting up reminders or sending them.

I DMed some reminders last night for today, but didn't get any of them. Last night, I went on the website to make sure they were there, which they were. I changed the reminder time from '5 minutes before' to '1 minute before'. This morning I checked and a few of them didn't have a reminder at all (It didn't have the bullet that say "Email and twitter reminder at time) and, so far, the ones that did, didn't send a reminder. Any idea what's up? The ones that didn't have a reminder I added the tags Twitter and Email, but the ones that had them already but didn't send- not sure how to fix that.