Cannot sign in after successful GitHub authorization (account binding issue)

[xingtucuican]

Hi,

I cannot sign in to my Cusdis account.

I have confirmed:

• GitHub authorization page appears normally
• I approved the authorization successfully

However, after that I still get:
"Try signing in with a different account"

Also:

• Email login shows: "This account does not support password sign-in"

So I believe my account binding is broken.

I have existing comments data in this account, so I really need help restoring access.

Could you please re-bind my account to my GitHub or fix the login issue?

Thank you!