Thanks for your post and welcome to the forums. It's really great having you on board with us in the Community.
I'm sorry to hear that you are having an issue with logging in to your My VM account as well as slow speeds. We can certainly take a look at things for you. I've been unable to locate your account via your forum credentials though so I will need to confirm some information with you in order for me to proceed with checks.
I have sent you a private message regarding this and will investigate further once I receive your reply. Just click on the little plum envelope at the top right hand side of the page to access your inbox.