Unable to connect Brother printer to new Gateway XB8

We set this up yesterday. Our phones and laptops connected easily. We have so far tried everything to connect our Brother MFC-L2700DW wireless printer, nothing works. Having the same issues with our TIVO

The WPA is set to 3, would changing to WPA-2 work? Don't know how to do that. I've gone into the edit settings and it doesn't give the option to change it.