I’m a beginner at Wyze Cams so you may be correct.The Mercusys system comes with three repeaters - plug one of them with an Ethernet cable into the router and it pairs with the other two repeaters via WiFi. I then put the two paired repeaters within 2 metres of the cameras. The repeaters are indoors and the cameras are outside but the wall is made of wood so the signal can pass through easily. The mercusys keeps your original SSID so the Wyze Cams don’t need to be set up for it.
As I said, earlier - I’m a beginner with these cameras so I’m working by trial and error, but I seem to have got rid of the 09 error code … or it could just be coincidence.
I have now just got to sort the 06 error and the SD card problem - three cameras totally wrecked their SD cards and I couldn’t reformat them, even in a PC with several formatting programs, so I’ve just fitted some SanDisk High Endurance ones which are working fine but it’s only been a week since I fitted them so only time will tell.