Indoor Cam will not stay on Wi-Fi

I have 3 indoor cams. 2 have been solid but one is unable to stay on WiFi. Every day I have to reconnect it at least 1 time. I have multiple WiFi accesspoints with good coverage, same thing happens using each. I swapped this camera with another camera that had no problems, but the relocated "bad" camera still disconnects. I have tried resetting and starting over a number of times.how to I get a replacement? Purchased from Best Buy 2 weeks ago