I agree about the config issue. I did reach out to TekGear and Tony was awesome in sending me a replacement.
Upon receiving it, I hooked it up to a PC (before ever connecting a bluetooth host), backed up all the original files, printed the version etc to a word document, and saved it all. Then I spent about a half hour just typing the alphabet over and over. It remained connected and unproblematic throughout.
While the original device was down and I was waiting to hear back, I had recreated the config file I wanted from scratch. I made sure the reserved chords were present, nothing overlapped wrong (not that it'll let you save if it does), and adjusted settings to get rid of all the mouse buttons except the left click at T0 (I don't need them for my use right now).
Then, I uploaded the new config to slot 1, disconnected from the PC, and let it reboot.
Initially, it appeared to work fine when reconnected via cable to the PC. So I switched to config1. For about 2 minutes it was also fine. Then, spontaneously, it switched two chord results? Yeah, I don't know: "a" and "q" just suddenly returned on their opposite key presses. I don't know what to tell you. I disconnected, T023'd it to sleep, woke it up, reconnected (still via cable), and it had reverted back to correct settings.
Then, a few minutes later, it stopped working entirely. No amount of button pressing, connecting, or disconnecting would allow anything to work. The PC no longer even recognized it as a storage device, so I couldn't revert the config change.
So I disconnected, T014'd into bootloader mode, let it fall back to sleep on its own, and then plugged it back in. This time, it opened the folder on the PC and I reverted all files back to their original state. Then disconnected to confirm.
It seemed to work fine after that. I finally BT connected it to my phone (the primary device I expect to use it on) and it worked fine for over an hour of practice (a full set of Tuner practice + some Monkeytype).
So, for now, as long as all you want is the default config, the device seems to operate well, including BT connection. I find that unfortunate, but I'm willing to hold out for a firmware update that I hope will resolve the problem.
