I cannot sign in as my college Adobe ID.

Your personal Adobe ID seems to be memorized in your PC.
Please delete the history of your web browser or delete the Adobe related list in the "Web Credentials".

 

  • Delete the chrome history

Click "...(vertical)" in the upper right corner of Google Chrome, then click "Settings".
Click "Delete Browsing History Data" in the "Privacy and Security" section of the settings screen, check "Passwords and other login data" and "Auto-fill form data" and click "Delete Data".

 

  • Web credentials

Open the Control Panel by typing "Control" from the search for magnifying glass next to the Start menu in Windows 10.

Change the display method in the upper right corner of the control panel to "Large Icons".
Double-click on the credentials manager to open it.

If there are any items with "adobe" in the "Web credentials" section, please delete them.

Please restart your PC and go to

https://adobe.com/jp/

again to check the situation.