Check the last entry in the Journal tab to find out the exact reason.
• Invalid account means that the credentials you entered upon login were incorrect, including your account number, password, or the trading server. Double-check your access data and try to log in again.
• No connection to White Forex Server indicates that MT5 is unable to connect to the internet. Check if your internet is working, press the connection status icon, and select Network rescan. If the issue persists, please get in touch with our Customer Support.