SueR33 "What's going on?"
I see that you are using the Chrome browser so I tried using Firefox and that came up with "Oops... Something went wrong. Please try again later."
So it seems there may well be an issue with the VM "Forgotten your password?" process at the moment.
However, if you know your existing password there is an alternative way to reset it:
1. Sign In to My Virgin Media via this link https://www.virginmedia.com/my-virgin-media with the affected email address and the current password
2. Go to “Account settings”, then "My Virgin Media Account details"
3. Scroll down the "Security and sign in details " section and click on "Edit" to the right of password.
Follow the prompts. If you have not already specified a non VM email address to act as your VM username you will be prompted to do so. That's now a security requirement of most VM accounts. Your VM email account and address will remain the same but in future you will have to sign into VM with your non VM email address.
If you access your VM email account via an email app or client (rather than the VM webmail service) you will also have to generate a "Mail app" password to use as the email password in your app but you should see that as you follow the password reset process.
Try that and see how you go.
Coenoby