I am trying to use XMLTV to get guides to show up for my IPTV client but I have no Idea where to put it. On kodi you can define a Remote-URL but it is not working if I put https://xmltv.se/ there. Is there a tutorial somewhere how to use XMLTV files on kodi?
You need to put the link to the xmltv file not the website. Plenty of tutorials online just google kodi xmltv (or epg). Not sure if that website will be helpful though. It seems that it has seperate xmltv files for each channel and each day, so you would have to merge them into one file to be able to use it efficiently.