Every betting site void the winnings of a 'late bet'. But it is uncommon if you have really placed your bets 1 hour 11 minutes before the start of the match. Still, the betting site will consider it as 'late bet' if it was placed immediately after hearing any big news about the games. @OP, why haven't you provided any single evidence in your main post here despite having all the evidence? I can see that your Reddit post is indeed deleted by the moderators:
Roobet Scammed Me – $13 Parlay Won, Then They Voided It With a Fake Excuse.
What is your username at Roobet? Also, add all the evidence you have now. $3 million from a $13 bet! How many inputs were in your parlay bet?
Here is all the evidence, keep in mind the matches started at 10:00am EDT as shown everywhere including the official sources but Roobet is saying that’s not true:
https://imgur.com/a/7Jlp2qYBit confused here. You said it's a parley but there are also singles that have been cancelled? Or does the roobet bet slip just look strange compared to other sites? Also, you should post a picture of the whole betslip as well where people can see ALL the games, starting times and also of course the wager.
Also, what sport has been played here. I understand it's kinda tennis but the results confuse me. I am also surprised that roobet let you make a bet this big in the first place tbh.