– “Arceus X NEO” has a history of being shut down, re-released, or modified by unknown third parties. The 1.5.3 version for iOS may be fake, outdated, or bundled with malware.
If you don’t have a computer, you can use a enterprise-signed version via or ESign , but these certificates get revoked by Apple every few days. The PC method is superior. iOS Arceus X NEO 1.5.3 - Roblox Mobile Executor