Ah, I had previously not realized that the code you posted was for the leaderboard 
And to everyone who is using the private leaderboard: There’s a great Chrome & FF extension that automatically shows a lot of extra information, including the time one needs for part 2. Get it here:
Sadly, it provides no stats for the initial puzzle, yet (see my FR).
Also, I only realized today that I had been logged in with the wrong account (“Thomas Tempelmann”) for the first 2 days. I’ve now switched to my “@tempelorg” account that I also used in 2021. So I re-did the first two days on the correct account, with amazing speeds for solving part 2