Well, @mercime, I did it at first (and re-did it right now) it doesn’t seem to change.
I really don’t get why it’s working on the BP Twenty Ten but not with my theme. 
Hello @mercime,
Again, thank you very much for your precious help !
I did what you told me, but I don’t get it, it’s style not working.
It’s weird though, because the BP Twenty Ten doesn’t show the squares / list-style-type and other bugs : http://tinypic.com/r/2j1n5mg/6 ; but my BP Template packed theme does : http://tinypic.com/r/i4e9md/6
This is the pastebin of the new style.css (I put the BP stuff at the begin) : http://pastebin.com/HJ8tuAEC
What am I missing ?
Thanks !
Ps : My style.css file on pastebin : http://pastebin.com/TgE8dmPb (could be useful… 
)
Hum. I’m sorry to bother you again @mercime but it’s really weird : I had a major bug today (I don’t know why, I was updating my website and then, boom, white screen of death…). I had to re-install WP, BP, and everything else… Fortunately I backed it up yesterday so I didn’t lose anything.
Anyway, I re-uploaded every exact same file, but then, I’ve got a difference in BP : some square (ul / li) are now there…. I don’t get why. Also, the BP integration is but abnormal (a small part on the right side is being hidden now…).
The screenshot showing those little weird square thing… : http://tinypic.com/r/elbfvb/6
The pastebin of the member page shown above : http://pastebin.com/18rd2kq1
The weird thing is, they also appeared on my sidebar (for no apparent reason) : http://tinypic.com/r/2d26bmw/6
Do you have any idea of what is going on ?
Thank you !
Thank you very much @mercime, everything is working perfectly now !! 
)
@mercime Thank you so much !! : )
I changed everything and it work like a charm ; except for one thing I’m not sure about :
“Then, in each of 16 files, you’d like to change the BP Templates’ page title’s header tag from
…
or
..
to
AND move title to above
Just watch out when you do this in the /activity/index.php page.”
When you say “Titles Of Respective BP Page” which part am I supposed to change : “page-entry-header” into “page-entry-registrer” (for instance) or “entry-title” into “entry-register” or both, or neither ?
Also, with the changes everything works except the index.php page of my theme.
Actually, I’d like BP to appear only in a member section, so not directly in my index page, did I miss something / how could I do that ?
Thank you !
Hey @mercime, thanks for your help !! : )
The other pastebins :
– Header.php : http://pastebin.com/5iK1gpTd
– Index.php : http://pastebin.com/1N4Z9pkx
– Sidebar.php : http://pastebin.com/KFJQdd7G
– Footer.php : http://pastebin.com/zFrvz0Vz
My theme is a child theme (with a lot of changes) of Yoko : http://yoko.elmastudio.de/
Thank you !!
