To claim the donator rewards you require the Donator rank.

1x Legendary of Choice (One Time)
10x Inventory Vault (One Time)
1x T1 Morph Crate Key (Monthly)
1x 3000 Pixelmon-Points (Monthly)
1x 4000 Poké-Dollars (Monthly)
1x 25000 Claimblocks (Monthly)
1x Bottle Crate Key (Weekly)
10x Vote Crate Keys (Weekly)
1x Random Shiny (Weekly)
1x Master Ball (Weekly)
20x Rare Candy (Daily)
20x Poké Balls (Daily)