I have tried for several days to access my online AT&T wireless account to monitor my family's data usage. I have done this many times before, usually once or twice per month. I keep getting this message "A temporary system error prevents us from retrieving your account information right now. Please try again later. (LGN0801). I see where this issue has been posted previously on the forums, but no definitive fix was ever posted. I tried calling customer service but they wanted me to install some app on my cell phone even though I was trying to access my account via PC. I am very frustrated with this. I tried deleting cookies, updating my browser, but so far nothing has helped.
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