Can't download my Xbox 360 account to play backward compatible games.

Hello, my xbox live profile is called "RinsableMLG" and today for some reason, I can't play xbox 360 backwards compatible games be ause my profile won't download on the xbox 360 servers. I can play xbox one games, but I can't play my xbox 360 games
and my profile won't download and it states "There's a problem with your credentials, blah blah blah". If I use my other two accounts, I can play on the xbox 360 games but not my RinsableMLG one. I seriosuly don't know what to do and I'm panicking right now.

I have the exact same problem. I was just trying to play saints row but couldn't connect to xbox live on backwards compatibility. So I deleted my account and now I can't download on backwards compatibility with the same error message as you.

No, sorry, you can't play Xbox 360 games on the Xbox One, even if they are digitally downloaded. At this point in time the Xbox One isn't backwards compatible. The games are linked to your account but the Xbox One simply can't run Xbox 360 games.

It's not gears 3, (for as far as i know gears 3 is not backwards compatible)

I can't download any backwards compatible game.

Is there another way then to log in on a xbox 360 console? like if i buy a physical disc of a backwards compatible game, would it work then? and would i be able to download 360 games after that.

The Xbox One is not backwards compatible so you can't play 360 games on it,physical copies or downloaded copies.

If you want to carry on using the games you've downloaded on your 360 then you will have to keep your 360 & use that to play them.

I didn't say I threw out my Xbox 360. I still have it. However, my Xbox Live account only covers my Xbox One. Therefore, certain DLCs I want, I can't have unless that game becomes backwards compatible. I also can't move from my Steam versions of the original
Far Cry and Call of Duty unless the Classic titles become backwards compatible so I can buy, download and install them on my Xbox One. Plus, I want to eventually sell the Xbox 360 for money, but I can't until all the games I mentioned become backwards compatible.
I think we can all agree that it would be nice for titles like these to become compatible.