Hey Guys, warning wall of text incoming from a non-nativ speaker :) So due to Covid my winter-break is much longer than normal this year and I decided to spend that extra free time to build a high track through my living room. Once I started and searched for new stuff that came out in the last couple of years it stumbled upon the Arc Pro and I found one on an amazon return site, long story short, I bought that one and integrated it in my track. It worked at first, or let's say I could drive with multiple cars and the power supply word fine as well (orange flashing LED on the ARC), so I moved on and purchased some other cars, integrated the digital-decoder and so on. Now I'm at the point where I'm ready to race and I tried to connect the Arc Pro with the Control-App but unfortunately, that doesn't want to work. I get an error every time (BLE one and not the PIN one). I can see the Arc at my Bluetooth devices but I can't bound them without an App, so I tried switching to the Magic-app and the older Legacy, the same problem. Then I tried to update the firmware on the Arc but that doesn't work either for the same reason, cause I can't connect through Bluetooth when I'm using nRF. The next step I tried was trying to update the firmware via serial-USB, but same issue I can't see my Arc in the LightBlue-App either. So my next thought was: Ok maybe it's a problem with the returned Arc system, so I bought a second one at Amazon just to see if that one works any different. That one arrived today and it didn't connect either. On top of that, this one won't work in general, it just switched to safe-mode (Red LED) whenever I plugged it in. Now I'm here and just feel lost, I'm running out of ideas on how I can get this thing to work. I really need your wisdom guys. any help would be appreciated :) Ah yeah one last thing to add: Yes I used different devices a Samsung Galaxy Tab s5e and a Xiaomi Redmi Note 9 Pro. both have BLE comparability