Quick answer: There are no fixed maintenance windows. Any platform maintenance is communicated by email to your registered address in advance.
What to expect
Advance notice by email whenever maintenance affects trading
Trading may be unavailable during a notified window
Check spam and keep your registered email current — it's the channel used
If you're affected unexpectedly
Contact support with the time, symbol, account number and a screenshot. And note that profiting from a platform malfunction — including pricing faults during or after maintenance — is prohibited under the system-error rules in Prohibited Trading Practices.
