Almost all the notices emphasized on the ending the SMS based OTP and making the switch to SecureSign. The Android version warning was put on fine print below you expect elderly citizens to have sharp eye and read every sentences from top to bottom?

Also I did mentioned before if you're going to make drastic changes and push for update on Google Play Store, why can't you just maintain the usability of the old apps for a time for the transition? Why immediately disable the old version and block the update for older Android at the Play Store? You say cooling period for transactions but no cooling period on Android apps? At least when the update is pushed users will find out their old Android can no longer support the new app but for emergency reasons still able to use the old version of the apps for SecureSign for some time without being blocked over the weekend or await collection from the bank branches counters.