Student finance England

Hi i’m getting means tested for second year just for bursary purposes. when emails were sent to my parents to confirm some details my sister opened my mothers email and accidentally automatically logged into her own sfe account. she said she support the application but now when we log into my mums account it says she can’t support the application. i’m guessing it’s because 2 accounts already agreed to support the application but my sister obviously can’t support it. so just wondering what to do from here??