Outdoor Cameras

I tried to post this but I don’t think it posted. My outdoor cameras drop connection. SimplySafe keeps saying my wifi isn’t strong enough. I have brought the cameras into my house. Completely remove them from the app and keypad. Reinstall the setup on all 4 cameras, they will show they are working but will not show the video. When checking the connection it will say it has no connection.

 The cameras are within 4 feet of the router and they will show they are offline or as stated above they don’t show any video they will pick up movement but no notifications then they show up on the app but when doing a connection test shows offline. I hope I made this clear enough to understand. Any help would be greatly appreciated.

KeithB