We will stop supporting OP's mobile apps on Android versions 5 and 6 on 16 February 2022. After that date, OP’s mobile apps can no longer be used on devices, such as Samsung and Huawei phones and tablets, running these old versions of Android.
From then on, you will need at least Android 7.0 in order to use new versions of OP's mobile apps.
To check — and possibly update — your operating system version, see your device settings. Newer versions of Android may not be installable on some old devices.