Internet banking

I upgrade to a new phone and now the standard bank app doesn't wane work on my new phone! I phoned standard bank a few times where they told me they have reset it in their side that it will work! It still doesn't work! A It specialist from them has phoned me also and promised me after 1 hour I must try again and then I will be able to lock in but I still can't! They have been in contact with me via mail that they are saying that the verication code that I need to lock in are going through their side to my mail but until now I haven't received that code to lock in! This is unacceptable service!