Atheris no longer connecting via USB dongle nor Bluetooth

I purchased a Razer Atheris back in early 2018. Figures that right when it's out of warranty it stops working. I can't get it to connect to any computer, either over the USB dongle or Bluetooth. Very frustrating, considering I just bought a Razer Blade 15, after switching from an MSI GS73-8RF, because of MSI's less than stellar support. Razer's quality or support doesn't seem to be much better. Short of buying a new mouse, what are my options to get this mouse working again?