Hi Ingulya
Welcome to the forum.
You might want to have a look at the following FAQ which explains where everything is;
www.benefitsandwork.co.uk/guides-for-claimants/faq/forum .
We have not come across that message before on the forum, other members may have come across it.
The message does not ask you to do anything so you should not be sanctioned for ignoring it.
Gary