I played the 25maps of the campaign where I got all medals. For the 5 TOTDs I managed to get 3 Ats and golds on the other 2. So I should have got 30 medals for bronze,silver and gold and 28 for author whereas I have 29 and 26. (You can see on screenshots)
Idea for my problem: I did not play on the 1st of January but I get the author the day after, maybe it is where the medals didn't come from, because I got the author of the 3rd of January the day after the leaderbord was close.
My question is : Did I need to get the medals of TOTD the day the TOTD is available or not ?
Official Response Trackmania2020 Play time