It was via the Twitter account for Rainbow Six Esports that we just learned that due to "technical issues" all competitive Rainbow Six: Siege matches have been delayed until future notice. Here's what the post says:
"Attention esports fans: Due to unforeseen technical issues, all competitive Rainbow Six Siege events (such as Pro League, Paris Major Qualifiers, etc.) have been delayed until further notice. We'll keep you updated!"
The most recent info relating to the game, including the impressive news that more than 35 million players have signed up for the game since launch, can be found here.