Here we can see a conversation from the Modern Event Calendar’s support desk which is about Date Method
Please click on any of the event "Palestra à Quarta" (i ve made it as recurrent events). As you can see the date is always 30th October... why is that?
Even if i click on the 20Th november for the same event, the same is 30th October
Head over to MEC Settings > Single Event > Single Event Page and select the 'Referred date' for date method option, and check again to see if it's OK now.