I have several different email addresses for different purposes. For the past three days I have been unable to log and and then open a second. This appears in the email address box: showIdentifier...
As you have probably guessed, what you are seeing there is part of the underlying HTML source code for this sign in page of the Virgin Media website rather than the actual email address itself:
Assuming that you can access the required email account after restarting your laptop there are a couple of things to try to see if you can access the email account without doing a restart:
Try opening the sign in page from a "Private tab" or in "Incognito mode" depending on which browser you use. See this link for more information on how to do that https://nordvpn.com/blog/how-to-go-incognito
If private / incognito mode works that suggests the problem may be a corrupt virgin Media cookie stored in your browser so try deleting the VM cookies from you browser to see if that enables to you to sign in from a normal tab.
I think you are the only, (or perhaps just the first 🙂) to report this specific issue. However if you do need to speak a VM support staff you can give them the details about the HTML source code. See this screen print, apologies the print is a bit small: