I also noticed that the same issue happened to another participant who dropped out because of notification issues but we could not track down what the problem was. In their data, the scheduled time of the notifications were about the same as for the first participant, but completely (i.e., in the middle of the night) and not the same as stated on the Notifications page. So based on the Data, they received their notifications 6 hours ahead of the scheduled time. At first I thought this had something to do with Ethica being based in a different time zone, but for my pilot participants, I could always see the correct time in the data.