I made a few more reservations, same thing again. Been told that they have been attached successfully but there's no way of knowing until I can confirm it with the hotel.

They also didn't use the ones closest to expiry as I stressed multiple times, spelt the name of my additional guest incorrectly for one of the reservations and put 3 guests (only asked for 2) down for one of the reservations resulting in it now showing extra person charges.