I just bought a TP-Link AC750 Wireless Dual Band 4G LTE Router and model Archer MR200. I'm pretty damn sure yesterday, it was really smooth. I even got 40mbps average. I'm not sure why today, I can't...

I just bought this but unfortunately, my Ubuntu 20.04 could not detect it. What should I do next? Can I request for kernel support somewhere? To whom? Ubuntu team or tp-link team or Linus? $...