Is there a way to change the WebID to log into the control panel?
None that I am aware of.
However, WEBIDs are being deprecated by DreamHost, the preferred method of logging into the panel is now the email address associated with the account and this address can be changed.
To change the email address, log-in to the panel and click the Edit Profile link at the top of the page. You can then change the Emails go to: in the Contact Info section.
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