Hi I have just installed this C7 router via Tether mobile app version 3.3.25 connecting directly to provider router with dynamic IP to it and creating an wifi network in archer c7. No problem at all.

Hi @Kevinz and TP-Link crew, It looks like just one OneMesh compatible device is enough to have mesh system. Could you please explain this phenomenon? I have one Archer C7 v5.0 router (supporting OneM