Im using tapo c210. I have 2 c210 units in our house. The first one i bought works just fine. 

Last week I ordered a new one since I thought c100 is a good security camera. I have reset and rebooted the unit multiple times. reseated the power cord, and even plugging it to other outlet. The unit works in the first 1 hour but after that, the camera disconnects, it shows offline in the app, then the unit itself is stuck in red light. Please provide other steps on how to resolve this. Thanks!