The current official version of PUBG Mobile is far beyond v2.2.0 (which was released in late 2022). Downloading these "modded" versions usually leads to several issues:

UC (Unknown Cash) is a server-side currency. It cannot be "hacked" or made unlimited through an APK because the balance is stored on official game servers, not your phone. Why v2.2.0 is Outdated

To keep your account and device safe, always download the game from official sources: or Apple App Store The official PUBG Mobile website (pubgmobile.com)

The 2.2.0 update originally introduced the and the "Gear Front" mode. Since the game requires a constant internet connection to its servers, an outdated version (like 2.2.0) will typically refuse to connect, making it unplayable. Play Safely