We can't install World of Warcraft: Forever because your operating system doesn't meet the minimum specs to run

In Development WoW: Forever Beta Discussion
2

Just want to make sure you’ve seen this, in case it applies to your situation:

Cannot install WoW Forever. Error: BLZBNTAGT000009CF. Says I need Windows 10 which I do have
Can't Install Beta, says i need win10, i have 11