Note that the Wifi range extended is to just to get the Homebase a signal. That can solve some problems but not all.
If all your cameras are at one side of the house, far from the your Wifi router, then extending wifi on that side will work.
If you have your cameras both far from the router and far from each other, say on opposite sides of a large property, the Homebase cannot see all the cameras no matter what Wifi extenders you have. You’d have to go for multiple Homebases, each serving each side of the property’s cameras and each homebase then using whatever Wifi extension for them to see your router.
This is because Eufy is not using Wifi between homebase and cameras, it can only use Wifi between your router and the homebases.
The internal structures in your property will be doing most of the Wifi range reducing, so what you can do is place the homebase high up, well above all the most solid walls in your property so they get close to a line of sight to all cameras.
So for example in my property I have a thick brick wall down the middle so any radio signal struggles to traverse front-back, but I have wood in the roof, so if I place the homebase in roof then there is only wood, no brick, between front and rear cameras.