At 17th level The Genie Warlock Pact should grant the ability to select the Wish spell for their 9th level mystic arcanum but does not currently work in D&D Beyond. If you would choose the Wish spell for your 9th level mystic arcanum leave it blank and add this feat as a custom feat in your character sheet.

• Grants the ability to cast Wish spell once per long rest. Normal Wish requirements and aftereffects as if you were casting it like your 9th level mystic arcanum.