Can't find IP address all of a sudden

I’ve been printing on my A350 for the last couple of days and all of a sudden Luban can’t find my printer IP address any more. What happened? I checked to make sure all of the software is up to date (found a new firmware update on the printer and installed it) but it still won’t connect to my printer. Any help?
(I entered my IP address manually into Luban and just get an error that it is unable to connect. Also, updated the Luban software on my PC but still get a timeout error).