I'm using an
LG G2
Android Version: 5.0.2

I have the most up to date version of the SimpleBGC app running on my phone.
Current Version
2.50b3

The firmware installed on my SimpleBCG Tiny 32
2.5.0 b2

Android Settings:
Security - Allow Unknown Sources
Developer Options - USB Debugging checked, Unchecked Verify Apps over USB

1. I connect using the OTG cable - The OS pops up a message asking if I would like to open the SimpleBCG app because a USB was connected. I click yes. (I've also tried clicking no and opening up the app manually. I've also tried having the app already open when I connect the usb)

2. When I'm in the app and I have the cable connected I click the little toggle next to connect. A loading wheel comes up for about 30 seconds. Then I get an error that reads "Failed to connect: NULL". and thats it.

Do I need to upgrade to a newer version of the firmware? I noticed there is no 2.50 b3 (version of the android app) version of the firmware. There is only 2.50 b2 (my current installed firmware) and the next up is 2.5.0 b4.

Any advice will help. Thanks.

James