Uhh....Did you think of contacting Nintendo themselves?

 

I am unsure personally but I doubt they'd stop it randomly. A friend of mine didn't have wifi internet for a while and was able to download them a week ago. Maybe it's just server issues or something. I'd just say try again later. If it's still not working you should be able to email nintendo to get it sorted.

 

All the ambassador games are listed as currently unavailable for me, with the exception of those that are for sale on the eShop. If you download the new versions of those games, they have a different banner on the home screen.

 

Maybe they're still on the US eShop?

 

I redownloaded Metroid Fusion like two days ago fine here in the US.

Make sure you're going under the right page on the eShop. I think it's "Your downloads", not "Account Activity". If you go to the wrong one, it shows the games but doesn't give the option to download them if I remember correctly. Check both of them.

 

What? Am I missing something here? You can get multiple uses out of the codes?

 

You're going to need to explain a bit. Haven't had my morning pot of coffee yet.

 

The shop pages say free, I think. You just need to access the page.
The eShop QR codes just take you to the page.

 

It's simple: If you don't see the games, your 3DS simply doesn't apply for Ambassador.

 

This reminds me, I need to download my other 16 ambassador games. I think you should still be able to, though.