Everything is correct :s no mistake

Not according to your images.

This one says "conversation_fields" - http://prntscr.com/400ehu

This one says "converstation_fields" (as does your page source) - http://prntscr.com/3zv4wr

So, which did you change and to what?

oh my fault.

I have changed now converstation_fields to conversation_fields

but still nothing changed

I see stuff under the Join Date now:

Attachment 149727

:o i couldn't see it while i checked :o
Maby i had a bad html again.

Now i can see it aswell :3

Thanks for your help !!