A me lo diceva quando entravo in una stanza uscivo subito e provavo subito dopo a entrare in un altra. A me di solito bastava ricaricare la pagina.
For mods and curious people It said that to me when I entered a room I left immediately and then I retried immediately to enter another. Usually I just refresh the page.
I have a different problem with Exit Path, when I try to start the single player it just keeps saying " Programmed by jmtb02" over and over again. I don't know what's going on with your problem, sorry.
Just refresh the page then it should be fine. That problem has happened to me a few times. I logged out of my account and then tried to do uni player then it happened.