Cameras fail to connect

We have recently moved house and can’t sync cameras to home base 2. When we moved there was no issue but once they dropped out that was it. I have tried everything
Charged batteries
Reset homebase
factory reset cameras
Rebooted Homebase
I don’t know what else there is to do , still get “failed to connect “ message.
Strange thing is the door opener sensor syncs instantly. Doing my head in !
Any help appreciated

Just wondering. Are the cameras still listed / shown in the app?
If they are… Then remove them from the app reboot your phone then try proceeding to add them cameras back.