Hi again Jessica,
There are a number of technical challenges which may affect international Guests when trying to link their Disney Resort hotel reservations in
My Disney Experience.
Here in the UK, if your booking confirmation number isn't recognised, you are able to call the Walt Disney Travel Company's Disney Experts on Freephone 0800 169 0749 who are able to provide you with an alternative 8-digit reference that can be used to link your Disney Resort hotel reservation in My Disney Experience.
I would recommend that firstly you contact the Company who you made your booking with, explain the problems that you are having and request your Disney Resort Reservation Confirmation Number.
If you still don't make any progress, I would suggest calling the Walt Disney World Resort direct on 001 (407) 939-4357 to see if they can resolve the issue for you. (If you do decide to call direct, I would recommend doing so via Skype in order to keep the cost of your call to an absolute minimum.)
Once you have linked your Disney Resort hotel in My Disney Experience, you will be able to make Advance Dining Reservations for the first 10 days of your stay at 180 days out.
Wishing you a magical trip filled with memories which will last a lifetime!
Emma