Is it showing as active if you put the address into mailtester.com? What happens if you try sending an email to the address - does it get a bounceback?
If yes - then try to access using an email client such as Thunderbird or outlook or whatever app is on your phone/tablet. You would need to remember the password. No guarantee this will work!
If not active, then the address and data has been deleted by Virgin in line with their T&C possibly at the normal 90 day point after your contract ended.
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