Your router broadcasts in two bands, 2.4 and 5Ghz. On many routers you have them both named the same so you cant see which one is which. Routers are simple if they are ISP ones. Log in and hopefiully you can change the names of the two channels, routers have fancy names like smart connect for having both names the same it varies from make to make but basically I have my 2.4Ghz named differently its called the (SSID) and the 5Ghz named differently as well. This is the only way to attach a video doorbell that needs a seperate 2.4Ghz connection as I'm not sure if you just turn off 5Ghz for a while to let the doorbell join it will stay joined on 2.4Ghz after you turn 5Ghz back on. write down the new names as you will need to change devices afterwards as devices that need higher bandwidth will need 5Ghz generally and 2.4Ghz for devices that dont, also use a decent password, over 10 characters for your wifi password, and router login if you can change that.
Think of it as to roads with different speeds, they just need renaming and its not hard, honestly just google how to do it with your router. Personally I got fed up of wifi cameras dropping, battery replacements etc so went for a professionally installed CCTV system which is all Ethernet and with a NRV, much more secure and less annoying and better image quality too.
Damned if you do, damned if you dont
