The "fixing" process occurs daily at 21:00 UTC. This is a standard practice across all trading platforms and is not related to any issues with the broker.
During this period, you will be unable to open new trades or close existing positions.
The fixing typically lasts for about an hour and is used to establish the official exchange rate for the day, which is important for settling commercial transactions.
If you'd like more detailed information about this process, you can click on the 'i' icon on the MatchTrader platform for additional insights.