Version 2.1.2 was known for being able to run complex scripts (like Auto-Farm or ESP) that simpler menus couldn't handle.
"I only use it on an alt account. Never put your main account on Arceus X because the risk of a ban or getting your pass changed is way too high." [2] The Verdict Arceus X v2.1.2 | Mod Menu
If you are looking for a "solid" recommendation: Version 2
Since it's a modded APK, it’s prone to crashing, especially after Roblox pushes out its weekly updates. Community Perspectives Community Perspectives Getting a "solid review" on something
Getting a "solid review" on something like is tricky because it’s a third-party Roblox "executor" (mod menu), which carries significant risks that most official review sites won't touch.
Roblox's anti-cheat ( Hyperion/Byfron ) has become much more aggressive. Even with an "anti-ban" claim, using version 2.1.2 (which is now older) is a fast track to getting your account permanently deleted.