Just checked the BF forum and they say the following:

We are currently experiencing disruption to the Ausracing Markets.

Please be assured that our engineers are working to resolve this issue as quickly as possible.
We’d like to sincerely apologise for any inconvenience caused.

It seems strange that the trots races are not suspended though.

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Never give up on a dream just because of the time it will take to accomplish it. The time will pass anyway.”

― Earl Nightingale