I am sorry your event reminder went out at the wrong time. Sometimes we can have some sending delays. If we do have sending delays we always post them on our Status Page. We do have a defect that is causing the London GMT timezone to not schedule properly. Our engineers are still working on this issue. I notated that it is happening to your account as well. I do see that your account is set to GMT: Dublin, Edinburgh. Is that the correct time you want it to be on? IF not you will want to update the timezone under My Settings.
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