STANDARD BANK BANKING APP NOT WORKING

I cannot use online banking because it asks me to scan the QR code and for that I need the mobile app which does not want to open on my phone anymore. When I open the mobile app it says: “This service is currently unavailable. Please try again later, while we investigate”. So I cannot get into internet banking service or mobile app to send Standard Bank a secure message. I am currently abroad and it is impossible with the time difference to get hold of Standard Bank during trading hours. Standard bank keeps on emailing me to tell me to phone them or send an secure message!!! They cannot understand the problem. WHAT I URGENTLY NEED IS TO GET ACCESS TO MY OWN FUNDS.