The ‘Invalid account‘ error typically occurs due to an incorrect account password. To resolve this issue:
- Ensure you enter your trading account password correctly, without typos.
- Double-check that you are not confusing your trading account password with your Members Area or Wallet passwords.
- Reset your password if needed. If the issue persists, consider changing your trading account password via your Members Area.
Additionally, ensure you use the correct trading terminal: MetaTrader 4-based accounts cannot be authorised in MetaTrader 5 (and vice versa).