Well I will opt for the reinstall of Opensuse KDE and go from there. Thanks for all your help.
If, after having done that it still does not print then we may need to examine the CUPS error log, since you mentioned that the printer appears to be receiving print data but that nothing is actually printed. It is often helpful to increase the CUPS logging verbosity first.
To do this, open a terminal, and type the following
sudo cupsctl --debug-logging
sudo systemctl restart cups
Then send a print job and examine /var/log/cups/error_log for any error messages.