Has anyone had issues recently with seats being changed or the seating map locked?

As a GCH I've had my seat changed on the last 3 segments. Last night I selected some seats for a segment that is now about 40 hours away, I think my seat has changed again and now I can't even see a seat map when I try to look in MBB to change it. So annoying when flying on the A320neo and trying to avoid the slim seats! PS - almost certain this is not because the club europe divider is moving.