I knew as soon as I said that I really liked the `app, that something would happen! I should learn to keep quiet!
I created a note today (9th Jan 2019) and tried to assign it to last week (3rd Jan 2019), didn’t work, date stayed at ‘Today’.
I added the entry as a calendar event on the 3rd Jan 2019 , unfortunately Agenda just hung, had to Force Quit. However the event went into the calendar.
I then assigned the event to 11th Jan 2019 (i.e. future date), doid’t work, stayed as 'Today".
Finally I added the new event as a calendar event for 11th Jan 2019 (future date), Agenda hung again but event went into calendar.
Sent an email to support but not received an acknowledgement as yet.