In short it seems that IOWC are supposed to maintain a database that feeds the national system but IOWCs failed very early in the year. It has since been replaced and new training given and current information should soon be available again.
And not just because of air conditioning.
But, thankfully, the Midttrafik web site (visit here) offers some limited English translation which helps with the basics. Blue buses are for regional and rural services, as with the route 23 shown in the advert.
City buses, as here in Aarhus ...