Ditto with Joe. I always reserve Labor Day week and never have difficulty, being sure to do it exactly at 9:00 Eastern time on the first day. And by that time, up to half of the weeks are gone to the 13-month people.
Also, I own Oceanfront. I can assure you that the view has nothing to do with your difficulty. A maximum of 50% of the Oceanfront weeks AND 50% of the Oceanside weeks are made available at 13 months. Each group is made available only to owners of that group. Thus, you are reserving from a separate pool of weeks from what the Oceanside owners try to reserve.
If you were unsuccessful when you called last April (13 months), you should have called at 12 months out to try again for each week.