I have an REOLINK doorbell and it suddenly stopped working. I don't know what is wrong. The light is white, and solid, but then flashes white four times before going back to solid white. I tried long pressing the reset button but that didn't do anything as far as I can tell. I don't hear any sound or anything, maybe a low popping sound but that's all. It's wired using the normal doorbell hardware if that makes sense.