All good
Agree with CB and AO as above.
I've been using 2 TP-Link Wi-Fi extenders over the mains circuit for a few years and move them around as necessary, up to 50 metres away on an extension lead.
I used to have the occasional problem when having visitors and several devices attached to the network. I found myself dumped of the network and needed to re-connect which was a minor inconvenience.
However, even this was solved when my son configured the extenders to bear the same name as the router so you can move seamlessly from one to the other without changing the settings on your device.