Well, thanks ! I'll investigate what could be the reason.

@chris Ha, I misunderstood the redirect real purpose. Will do, thank you, Bernard

@tutrix Perfect ! Works like a charm. Thank you.

OK, thank you. I'll see if I can find a work around.Bernard

After some thinking, here is my solution, knowing that "bearforum" is my phpBB database name: SELECT concat('/forums/viewtopic.php?t=',bearforum.ph...

@dimalifragis I guess you got that from a cache, outdated. Not sure what you mean about "all wpforo comments" . Could you show with a picture ?BTW, he...

So, I installed and setup Redirection, it seems to work well. Good advice, thank you.

@dimalifragis I AM following EXACTLY wpForo FAQ..... Actually, everything works perfectly, WITH W3TC.

@tutrix I will look at it. Thanks !

@chris I know that, Chris. I was asking for ideas, hints, from people who have done that before me.

@chris Well, yes, I guess I could have searched for the proper settings, but I already spent a lot of time on this. So I installed another SEO plugin ...