Betfair Down / Betfair site crash
Major outage on place orders and performance issues cancel orders according to https://status.developer.betfair.com/
Edit: All back to normal now.
Edit: All back to normal now.
Out of the two, it's always the most prone that said I use it every day as its more advantageous especially with automation and only I switch to polling on Saturday afternoons.
But any sign of trouble on other days and the first thing I do is revert to back to check