Android-Zebra Printer Integration Fix

We have an Android app (TC58) that prints ShipStation shipping labels (4x6 PDF) to a Zebra mobile printer over Bluetooth. We need a definitive fix for unreliable PDF Direct printing and a robust default path that works across power cycles and app sessions... (Budget: $30 - $250 USD, Jobs: Android, Android App Development, Bluetooth, Bluetooth Low Energy (BLE), Debugging, Java, Mobile App Development, Mobile Development)