Access your router settings by typing your IP address into the tool bar of your browser usually 192.168.1.1, then entering your admin name and password usually admin/admin
WPS- switch off, (this is easy to crack and there is a way to turn off the more secure WPA/2 encryption if this is switched on). so don’t enable both.
WPA/2- Switch on, this the better type of router encryption, if this is not available for your router use WPA.
UPNP- (universal plug n play) This makes life easy if you play online games enabling ports to open for the online game services, if you don’t need this, switch it off. (this is usually enabled by default).
SSID- (service set identifier) Change this to a name you will recognise but nothing linked to you personally such as your name/address etc.
Administrator password- change to a random, long password, use upper, lowercase and symbols to lengthen the time to crack.
Wi-fi password- again, use a good password, different from above, always use different passwords for everything that requires one, it’s not much inconvenience to use a long password as you don’t have to enter it frequently so make it a good one, Steve Gibson's perfect passwords is a good choice. https://www.grc.com/passwords.htm