The APK requires a higher Android version. Solution: You downloaded v16 or v17. Delete it and download v13.5.1 specifically.

Cloud plugins require Android 5.0+ for OAuth security. Solution: Use the file manager to open local documents, or manually download from cloud to device first.

Android 4.4.2 was released in 2013. Most current office suites require Android 8.0 or higher. WPS Office, however, offers a that runs smoothly on KitKat. Key benefits include:

: Go to Settings > Security and check the box for "Unknown Sources" .