Are you getting a specific when installing (e.g., "App not installed")? Do you need help finding a trusted archive site ?
To ensure your app doesn't immediately update to the newest version, open the Google Play Store, find Waka, and uncheck "Auto-update." Important Considerations Before Installing Waka Old Version 3.6.1 Download
Version 3.x represented a golden era—an optimal balance between features and system requirements. Version 3.6.1, in particular, was a minor patch that fixed several critical bugs from 3.6.0, making it the most reliable release of the 3.x branch. Are you getting a specific when installing (e