Of course you can just like you would on a PC using the web browser to login. But here's the problem, with SMS TACs phased out the only way to receive the SECURE confirmation for your transaction is through the app.

How are you going to authorize the transaction and complete it when the app already blocked on your old Android phone refuses to even launch/open and you can't even update it?
Bank branches only open on weekdays to apply for the token generators.

This is how I came across trying to pay my bills over the weekend. No way to complete the transaction.

If emergency situation you need to make payment for deposit to check in private medical facility and locked out how?