Mobile Auction Auto-Bidder App

I need an expert to create a streamlined Android application that automatically places bids in Savage Survival’s in-game auction house. My main priorities are speed, simplicity, and real-time functionality. Key deliverables include:

1. A mobile app running exclusively on Android that works seamlessly with recent OS versions.
2. The app should monitor the game's auction system for specific items within my preferred price range, and bid instantly as soon as the criteria are met to beat competitors.
3. It must handle secure authentication for the game's auction endpoint and store tokens or credentials securely using encryption.
4. A background service or similar method to ensure continuous monitoring without draining the phone battery excessively.
5. Detailed logging of bids sent and server responses for me to verify performance.
6. On-screen alerts if an auction ends early or a network issue prevents bidding, so I know to act manually next time.
7. Clear instructions on how to slot in my own credentials and maintain the app if the game updates.

Deliverables:
- Production-ready APK and full source (preferably in Kotlin or Java) with build instructions.
- A README file containing any required keys, endpoints, or config files, along with usage guidelines.
- At least 3 successful automated bids demonstrated during testing in a live or staging environment.