Why is my money frozen on Binance?

I'm quite puzzled, why is my money frozen on Binance? I've been trading cryptocurrencies on this platform for quite some time and never encountered such an issue. My funds were supposed to be available for withdrawal, but suddenly they're showing as frozen. Could it be due to some recent security measures or is it related to my account specifically? I've checked the Binance support pages but haven't found a clear answer. Could you please explain what might be causing this and how I can resolve it? It's really worrying me, as I need access to my funds urgently.