Hi @Mia_Arya
I am sorry to hear you're not able to log into any games, or the banking apps.
I would recommend please try turning your mobile off for 30seconds and back on, if that doesn't resolve the issue, please give us a call on 131 245, and we will be able to look into the wifi, and make some changes to be able access these apps for you.
Thank you, Sheena
AGL Telecommunications