404. That’s an error.
The requested URL /add?source=atgs&feedurl=http%3A%2F%2Fwww.thermenwartung-kundendienst.at%2Fapple-icon-57x57.png was not found on this server. That’s all we know.
/add?source=atgs&feedurl=http%3A%2F%2Fwww.thermenwartung-kundendienst.at%2Fapple-icon-57x57.png