Zombie Telegram Credentials that I can’t delete

Hello n8n Team,
I have a “zombie” credential in my account that I cannot delete, which is preventing me from activating any workflow with a Telegram Trigger.
The symptoms are:
Adding a Telegram credential to a trigger (both Webhook and Polling mode) in a brand new workflow causes an error: “Please resolve outstanding issues before you activate it.”
My credentials list in the UI is empty. There is no visible duplicate credential to delete.
We have confirmed with the Telegram /deleteWebhook API call that no webhook is active. The problem is not with Telegram.
This points to a corrupted credential entry in the backend database. Can you please manually find and purge any and all credentials of type telegramApi associated with my account? Thank you.

Hey @Pak_Sing_Liu hope all is good. Welcome to the community.

Are you running on cloud?
Could you please show a full screenshot of the issue?

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