You can download the clean, signed version of the mod from the following link (updated weekly):
A: Your Android version is too low, or you downloaded an APK meant for a different CPU architecture (ARM64 vs ARMv7). Download the "Universal" version.
It turns a grindy mobile game into a stress-free dyno simulator. You get to focus on what matters: tuning gear ratios, perfecting your shift timing, and beating the midnight ghost of the Wangan line.