Keep being disconnected

Hi, my Mii ID is: 6227109175

My device worked well for the last year, however in the last couple of weeks it keep being detected as offline even with connection.

I decided to delete the device from yeelight app and restart connecting it. It keep being disconnected halfway through and failing to connect when I try to add the device again. I tried 3 different hotspots already.

Can you please check what happen to my device?

Many thanks