First, there’s no clue in your posts if the small existing routers are even Wyze. And there’s nothing special in a router that is going to guarantee a better or priority connection to the same manufacturer’s devices. That would interfere with routers complying with industry standards.
There’s no tools or features in Wyze routers that’s going to force a Wyze cam to connect to a Wyze router.
Currently the already established connections your Wyze cams came before your Wyze Pro, so they are going to stay connected to the small existing routers, because there’s nothing to “tell them” to stop and connect else where. There are some common sense tricks you can try, but without guarantee to work. But I’m going to try and write detailed instructions step-by-step how to. Because right now, I don’t know if your small routers are Wyze, I don’t know if those are your Main and you added the Pro as a node.
But, here what I would do, if I were you. First, do not change the SSID/network name. You are going to reuse it. Do not change the network password/passphrase, you are going to reuse it. You are going to reuse both, so you don’t have to set all your devices up again.
Next, shutdown all your routers and nodes. All. Unplug them. Take the Pro and plug it in AT the cable modem. And start it up. You might have to go into the Wyze app and make it the MAIN/PRIMARY router to your setup. Let it get completely up. If you need to bring that Wyze cam, or one, closer to see that it connects do it. After all that is the objective, is it not? (It is the only camera right now on your home network, right?) The other two small routers are not powered up, right?
Now, let’s let this run with the Pro as the MAIN and the Wyze cams running, for a few minutes. Access all the cameras, via the app to insure they are connected. We want an “active” connection. Working? If not, move it closer to the router for a few minutes. And get that active connection going.
You want the Pro to be your MAIN. Its been 15+ minutes, Move those Wyze cams back to where they were. Done? This is important now. Don’t want an easy path for them to try to reconnect to the small routers.
Go ahead, power up one of the small routers. If they are Wyze, you might have to rejoin them to your new Pro mesh. Google to get the instructions on how. Everything you are learning to do is an investment in your WiFi knowledge. Embrace it, don’t complain.
(I have to guess the two small existing are Wyze. That’s the only thing that makes sense, else you would have had to use different names for the Pro’s network name than the two small routers.)
Now, move that first small router (it’s called your first node, even though its the second router), away from the MAIN, but not closer to the Wyze cameras. Let’s check those Wyze cams. Still online? Can you see if they are connected to the MAIN? They probably are. They probably are; IF you had to reset them to factory to get them to create that new connection to the Pro. When you did a factory reset to connect to the Pro, you flushed all the history of all your devices, not use Wyze, out of the memory of the router. So, it doesn’t even know those cams existed.
Now, you can setup the other small router, the second node, even though its the third router. After its had a few minutes to sync to the MAIN/PRO, you cam move it. Frankly, I would not move it towards the Wyze cams yet. Because:
WHEN, you lose power, you lose your Internet connection. When you lose that Internet connection - nothing is connected, but the router’s memory remembers it HAD a connection to your devices, (all your devices, not just the Wyze cams.)
WHEN power comes back on, the the PRO is going to have to connect first, and usually the cable modem and routers and devices all get power at the same time. So everything is trying to compete for a connection.
So, the PRO reconnected to the router, then the other devices that were connected to it, try to reconnect.
Its like a race now. The small routers, the two nodes are trying to reconnect to the PRO, but any devices that were also connected to either of those nodes are also trying to connect. If the PRO is up, they are going to try to connect to it, not the Nodes. Why? Because they are all on the same home network. They don’t where they connect. But if a node is “up” and available to receive a connection, they might connect to it first. We have no influences over where they connect. We sort of have to fool them, cheat them, deny them an easy connection. Making sense?
In a perfect world, WHEN you lose power and Internet, we wish we had an easy way to make this happen.
The/our network was perfect. Everything was connected to where we wanted it connected. (LOL, yeah, right.)
Power is back up. But only the cable modem powers back up. And everything else waits 3+ minutes for the cable modem to start up and connect. AFTER it connects; the MAIN router turns powers up and we wait 2+ minutes for it to connect. And then like magic, every device (except the node routers) that was already connected to the MAIN, powers up and reconnects to the MAIN. And after some magic signal alerted the nodes that everything the MAIN was connected to is connected, the nodes power up. After the nodes are powered up, the devices that connected to them before all this started now power up and connect.
Helpful?