Appalled and exhausted. Too many problems with ABSA's banking app.

I have been to an ABSA bank twice in the past month. I had to get my banking app sorted out and I did. Now, two weeks later, I try going into my banking app and when I enter my PIN it tells me it is incorrect, which I know is not the case. Upon further research I find that Apple users have been having issues with the banking app. When you go onto ABSA online on the computer, it says in bold, red text on the logon screen that this has been a common issue among Apple users. Why was I not informed of this issues when I went to get my app sorted out. Also, when I go to reset my PIN it takes me to a new page that ASKS FOR A PIN TO RESET MY PIN. And no matter what PIN I put in it tells me it is incorrect. Also when I try to reset my PIN using a different method that ABSA gives you, I still get told my pin is incorrect. I would just like to know why I am being told my PIN is incorrect when I know for a fact it is not.