So like what do I do with message like this?
Not sure what you mean? This is simply letting you know that Monday deviations will not be avail until 8:30 PM ET. The messagge is there to let you know this in case you open a chart on a Sunday before this time. All you need to do is to be aware of the timeframe, and to hit the “close message” button as shown on the top right in order to remove this message from your screen