According to the organisers this was due to a crucial clash with a national event organised by the government of Ghana at the same event of the same day.
Inquiring as to whether the events were to be held as the same time, I was told that this was true and it was impossible to reschedule the national event so the HSH has been pushed aback a week to make it possible for both events to successfully take place.
The event organised by Fountain House Ghana is seen as the official last event for SHS finalist and a few awards are given to students who are voted for by their peers. Considering that the show has been rescheduled, I believe this automatically means the AfterParty has also been rescheduled
RoisKiD is on the move inquiring more and I shall deliver to you when I hear more.