RhoElement Apps does not print on Zebra with APD

Hi All

 

Currently we have a Rho App which print over a bluetooth link in a GX420t using APD. Randomly sometimes the App can not print due to lack of connection with the printer. We know that since the printer has a display which shows whether you are connected or not. Our question is, is there any debugging tool from Zebra in order to know why the app is not connecting with the printer?

 

Thanks