ip addresses

Somehow the printer,HP Deskjet 3050A J611 series (Network), has two IP addresses in its set-up, yet we cannot connect by WiFi. Until recently both my wife's laptop and mine were connected happily. Neither addresses are correct. How can I delete the erroneous data from the printer? Trawling the HP site was of no use, and the Set-up on the printer has nowhere to alter things. I have a feeling someone close has tried to set up a similar printer and logged on to my router! Possible??

ip addresses