Disconnect Salesforce before disconnecting the associated email address

Question

I am trying to disconnect one of my email addresses (a corporate address) from my personal Trailhead account.

a) From https://trailblazer.me/settings?lang=en_US and then...

b) From section "EMAIL ACCOUNTS Manage your connected email accounts", when clicking the button "Disconnect" next to the corp. email address I want to disconnect, Salesforce shows me this red message:

I have disconnected any Salesforce Account and I have even tried to perform the disconnection of the email address from a different laptop but I am getting the same above mentioned red message again.

How can I get over this red message and effectively disconnect the corporate address? Should I perhaps wait 24 hours?

Thank you very much.

Answer 1

Answer from Salesforce Team which has resolved the issue:

Thanks for getting in touch with the Trailhead help team.

You have two salesforce orgs connected to the trailhead. Please check any of the salesforce org use the email id which you are trying to disconnect. If yes, please disconnect that org before you try to remove the email id.