No Updates to Chart
Issue
The Lucky Trader EA does not update information on the chart for several minutes.
Connection Lost
MetaTrader should be connected to the broker's server.
Procedure
Demo account is expired
MT5 will not be able to connect to the demo account if it's expired. In this case MT5 will keep asking for the login details and fail all login attempt.
Procedure
When this happens open a new demo account (right click Accounts in Navigator window and select Open an Account).


Market is closed
New tick information and updates to chart happens when markets are open.
Procedure
Double check that markets are meant to be open currently.
Disk is full
There should be at least 50MB free disk space available on the drive MetaTrader is installed on.
Procedure
If the free disk space is low then free up space.