ABSA Banking app on Android - Disapppointing

The recently launched ABSA android app, which replaces the standard SMS OTP codes when logging into internet banking is disappointing. lags during transactions, sometimes i don't even receive a transaction authorisation request. I urge ABSA to speak to their IT gurus and sort this out. i have also had a weird request for information pop up as i try to log out of my account. There is no way to remove it. I even went into the bank to discover the reason for it, and even my banker couldn't assist with it. I understand that to move with the times, new systems have to be implemented, but please ABSA, make sure to fix all the irritating glitches.