Question about Lexmark MC3326adwe

The initial installation via WLAN with WPS worked at some point - details have slipped my mind. Unfortunately, it keeps dropping out now - sometimes the next day, presumably after the laptop has been in sleep mode. Deleting and reinstalling helps in part, but not always: the drivers from the initial or previous installation are still recognised, but not reinstalled. In the "Unknown printer" field, the Lexmark sometimes still/again appeared, but not the last few times. Yesterday the installation succeeded again, today it was still there, but "offline". Haven't figured out yet how to get it "online" - the network connection seems to be there (the radio fan is green). The best way was to use the "manual installation" option at the bottom of the options box, then look for the port where Lexmark appears in the name. Attention: there is also a port with a letter search, EPxxx or similar, behind which the Lexmark hides. So I am also still looking for a secure routine, but would soon call for a beating for those wretched dilettantes who don't have the ambition to make an installation reasonably foolproof - by fools I mean precisely those IT programmers, trade included. Take the money and hide. Moody eve answer ;-)