Which criterion specifically was violated during that election? A lot of people seem to think there was a delay in reporting results, but there's a differences between a reporting delay and a counting delay. Most districts report counts incrementally, so if it's taking a long time to open thousands of envelopes, and it's a close race, you get incremental updates, but no final verdict until enough are counted.

Also, a crucial difference in the US is that each party sounds poll watchers to every single polling station to watch people count the results.

Would be very interested to know if there are any serious claims that any of these other criteria were violated