Hacked
I have been hacked as all my contacts received suspicious emails from me. The password was reset on my Virgin email account and although I can log into my Virgin Media account to receive emails I cannot log in with the same password on my phone or tablet apps or on my laptop through a Thunderbird email account. They will not recognise the password. Virgin have reset it several times now and I am getting nowhere but going round in circles. Any advice would be appreciated.
VM changed the security settings around a year or so ago. Having changed the My VM account password for the email address concerned you will need to go to the My VM account settings page and generate an app password for use with email clients.
https://www.virginmedia.com/help/broadband/manage-email-account