You can try to build a demo application form LinkOS SDK and check if it will be able to discover your printer:
To do that you will need to install SDK and then find demo app source code using following steps:
1) press Start button
2) Find SDK in menus: All Programs -> Zebra Technologies -> Link-OS Multiplatform SDK -> Link-OS Multiplatform SDK. It will open file explorer in the root directory of SDK.
3) Go to subdirectories: android -> v2.14.5198 -> demos
There you can find a source code of demo application. Here you can see how to import application code into Android Studio and add SDK libraries:
In case it will successfully discover your printer you may need to compare applications implementation. Your application and a demo.
Software Engineer, Kutir Mobility
Posted on behalf of Zebra Technologies