I have the same issue.
I tried to download from the store, but the 'Get' button is shaded grey and I can't click on it.
I tried the two links above:
the first link https://www.microsoft.com/store/productId/9PM860492SZD?ocid=pdpshare allows me to download a widget that brings me to the app store - but I can't download from there.
the second link: https://pcmanager.microsoft.com/ gives me a 'coming soon' message.
It's been the same situation for about a month - and there doesn't seem to be any indication of when the app will be released.
I'm in Ireland.
Windows 11 Home. Version 24H2
64-bit OS. x64 based processor
Edit: 22nd April 2025.
Big thanks to @tekkieBoy for his answer.
I downloaded the manager from here: