Welcome to the Community!
I'm sorry to hear you are having problems accessing My Account. Can I ask what device and browser you are using?
We have been making a few improvements to My Account in the last few weeks, could I kindly ask you to please clear your cache (instructions here) and retry? Sometimes as we make improvements behind the scenes you might not be seeing the latest version on the front end.
Let me know how you go and we can continue to investigate.
Looks legitimate enough but currently My Account works for me on both the PC and Android so your will have to await on AGL on a non holiday or weekend for a reply.