Clicked on the forum and said I had a reply notification- I read it and then clicked off and got this message..

Request source authentication failed. Either someone tried tricking you into doing something that you didn't want to do, or the authentication values just got their regular refresh. In the latter case, just repeat what you were about to do.

What does it mean I was tricked into something- help?

Need to ask admin but would think the system could not read or missread your address so gave you the msg you received. As it said, just try again.