Trading

How do I report a trading problem?
What does an ask price mean? And how about a bid price?
What does the side (buy/sell) of orders mean?
Can I go long and short on the same market, at the same time? And can I hedge?
Is there a cap on an open position volume?
Why did my account balance become negative? How do I fix it?

MetaTrader 4 / MetaTrader 5

Why do I see the "invalid account" error message?
Why am I unable to trade certain products MetaTrader 4?
How do I add/hide products in MetaTrader 4?
What does "trade context is busy" actually mean?
Can I trade via a web browser?

Rollover

What does rollover mean?

Swap

How do I check the most up-to-date Forex swap rates？