You need to send your adapter in for repair.
Alternatively if you have a Windows computer, you can try the repair yourself with the Firmware Update program. See the Repair page for more information.
https://bluefire-llc.com/adapter-repair
See also the Getting Started document's Power and Battery Warning sections for reasons the adapter does not light up.
Hopefully yours is just a memory corruption.
https://bluefire-llc.com/getting-started-document
If it's challenging accessing or seeing your adapter, you might consider getting an extension cable as it can also improve your Bluetooth signal.
https://bluefire-llc.com/extension-cable
