Hello MilkyMagoo,
Thank you so much for reaching out to us on our Community Forum. I understand how irritating it is not being able to manage your account. I can absolutely help you with this.
If the change was recent, this can cause the issues you are having with your myAT&T. It can take at least 1 billing cycle for it to go into effect.
I would like to look further into this so that I can better assist you. I will be sending you a private message to your Forum’s Inbox to gather more details.
I look forward to hearing back from you and I hope you have a fantastic rest of your day!
Anabel, AT&T Community Specialist