seems like you are right https://github.com/espeak-ng/espeak-ng/issues/1819

all build apks are 2 year old and not built for arm64-v8a

you can just use any other OTP application on Linux like https://gitlab.gnome.org/World/Authenticator or https://apps.kde.org/keysmith/, they all follow the same protocol
you can export your keys in Aegis and import them in most applications