Hi all,  Unifi just installed for me a Fiberhome combo box for my newly subsribed 100Mbps service.  The wifi signal coverage is not satisfactory so I was wondering what option do I have to improve it.  Can add extra mesh unit? But I can't find any compatible unit from the Fiberhome brand. Change the modem router altogether? Is there any aftermarket 2-in-1 modem router around?

Any suggestion and help is highly appreciated.  Thank you.

It's RP3047