Someone(s) is spamming the direct message/private message with junk and I do not want to open the private messages but I do not know how to delete private messages in the Plarium site. These messages are not coming in game, they are coming in the tiny "talk" bubbles on the nav bar before entering the game.

How do I delete them?? Preferably without clicking on them/opening them.

Tried to do a search for the answer and it was a mess of results totally unrelated to the question.