Metar Is Too Old

Searched for "Metar" in forum before creating new post but could not see this particular query so here goes.
In the panel below the "Metar" box the first line always reads "Metar Is Too Old". What does this mean please? and am I doing something wrong?
My procedure is as follows:
Start FSX
Go to airfield
Start FSrealWX-Pro 2.04.834
Screen shows that FS has connected and program proceeds to load weather successfully.
Any assistance will be greatly appreciated.
Cheers Dan

Hello. ICAO? And your Location, please.

Thankyou for your quick reply. My "personal" airfield is YLIL which is Lilydale, Victoria, Australia (there is no Metar there to my knowledge) however this message occurs at every Metar region I have been flying in since installing the trial version. i.e. Dijon and Nice and Corsica yesterday. The weather engine does appear to work but I am confused as to this message. Within your programming, what was/is this FSrealWX message meant to convey? Maybe this is a trial version experience? Thanks again, Cheers. Dan