itch.io

 I copied this from what I mentioned in the comments. THIS IS FOR PC VERSION. For anyone having issues running the Among Us because they purchased it on the itch.io site, you MUST link the purchase to your Steam account. *NOTE: you do NOT have to repurchase the game* The steps below should help you out:

1.  Go to 'my library' and click on Among Us. At the top of the page you will see "You Own This Game" and press the download button.

2. Scrolling down you should see a "claim steam key" click claim and you will have to put in a code given through an email address. Afterwards, you have to click that to reveal the steam key.

3. Open steam and on the top of the tab is 'Games' under the drop bar  'Activate a product on Steam' 

4. Enter the steam key given from the 'Download Among US' given on the itch.io page. 

5. Run the game on Steam (you will have to delete the old version and redownload it ON STEAM clicking the play or download button), this will enable you to play. When you do, the game will launch and you will be able to add your account, change your name, and chat. 

The new map requires an account login to play, I copied this from what I mentioned in the comments. THIS IS FOR PC VERSION. For anyone having issues running the Among Us because they purchased it on the itch.io site, you MUST link the purchase to your Steam account. *NOTE: you do NOT have to repurchase the game* The steps below should help you out:

1.  Go to 'my library' and click on Among Us. At the top of the page you will see "You Own This Game" and press the download button.

2. Scrolling down you should see a "claim steam key" click claim and you will have to put in a code given through an email address. Afterwards, you have to click that to reveal the steam key.

3. Open steam and on the top of the tab is 'Games' under the drop bar  'Activate a product on Steam' 

4. Enter the steam key given from the 'Download Among US' given on the itch.io page. 

5. Run the game on Steam (you will have to delete the old version and redownload it ON STEAM clicking the play or download button), this will enable you to play. When you do, the game will launch and you will be able to add your account, change your name, and chat. 

you shouldn't have to repurchase, you just have to link the purchased game for itch.io to steam using the steam key provided when the game was purchased.

THIS IS FOR PC VERSION. For anyone having issues running the Among Us because they purchased it on the itch.io site, you MUST link the purchase to your Steam account. *NOTE: you do NOT have to repurchase the game* The steps below should help you out:

1.  Since you're already on this page, scroll to the top to "You Own This Game" and press the download button.

2. Scrolling down you should see a "claim steam key" click claim and you will have to put in a code given through an email address. Afterwards, you have to click that to reveal the steam key.

3. Open steam and on the top of the tab is 'Games' under the drop bar  'Activate a product on Steam' 

4. Enter the steam key given from the 'Download Among US' given on the itch.io page. 

5. Run the game on Steam (you will have to delete the old version and redownload it ON STEAM), this will enable you to play. When you do, the game will launch and you will be able to add your account, change your name, and chat. 

the only thing that worked for me was making a steam account using the 'claim steam key' when you click the download Among Us at the top of the screen. You have to link the purchased game from itch.io to Steam in order for the game to run with an account. Use the 'Game' tab on Steam and 'Activate a Product on Steam' to download the game to Steam. You should be able to launch the game on Steam and link your account to it.

the only thing that worked for me was making a steam account using the 'claim steam key' when you click the download Among Us at the top of the screen. You have to link the purchased game from itch.io to Steam in order for the game to run with an account. Use the 'Game' tab on Steam and 'Activate a Product on Steam' to download the game. You should be able to launch the game on Steam and make an account.