Hi Jodi! Welcome to the Disney Parks Moms Panel. I'm so sorry to hear that you are not having any luck securing a dining reservation using the online
Disney Dining Reservations. Unfortunately, due to the proximity of your upcoming Walt Disney World vacation, it appears as if all of the advance reservations have been taken. If you call you will have the same result - both systems have the same availability. Advance dining reservations open up 180 days in advance, and many guest make their dining reservations exactly then - especially for character dining experiences it is especially important to make them well in advance.
At this point you have a couple of options. You can continue checking online whenever you get a chance-many guests have a change of plans, and when they cancel, their reservation will go back into the system. You may get lucky. Otherwise, you may want to try your luck with a walk-up request at the restaurant you wish to dine at. While some do not accept walk-ups, others do if you don't mind waiting for a table. To have the best luck with this, I suggest going at an "off" time - like right when the restaurant opens for dinner, or later in the evening.
Jodi, don't be discouraged - I wish you lots of luck and will send you some extra pixie-dust in hopes you will get lucky and secure that dining reservation you are seeking! Please let me know if I can help you with any other questions you have. Have a magical day!
Kristen