MT4 invalid account error occurs when a trader cannot log in to the MetaTrader platform due to using the wrong login credentials (incorrect username, password, or server name), or by attempting to use a non-activated/archived account.
The following methods may help solve this issue:
Check your password and account number.
Check your server. For a live account, select “FXTRADING.COM-Live”.
If you haven’t logged in for over three months, your account might have been archived. You may need to contact our team to re-activate your account. You can fix invalid account mt4 app problems in the same way on a desktop.
If you need further help, kindly click on the Livechat icon located in the lower right corner of our website, or send an email to [email protected].