This is the most frequent error users encounter on the V2. Because many V2 units run on Android 5.1 or 7.1, modern app developers may have dropped support for these older operating systems in favor of newer Android versions (12, 13, etc.).
Sunmi does produce specific versions of their hardware that are GMS-certified (often for specific regions or large-scale enterprise contracts). If your device has this certification, the Play Store will be pre-installed. Alternatives for App Installation sunmi v2 play store
The Sunmi V2 does not support the Play Store natively, but with 20 minutes of patience and the four APKs listed above, you can force it to work—just be prepared for the occasional maintenance reboot. This is the most frequent error users encounter on the V2