Everything works except regular pages :-)

Have you tried resetting your permalinks to the default setting?

yes, it really worked, thank’s!

but what can i do to keep my permalink sturcture and
still have the pages work?

The permalink strucure you chose was obviously flawed. so have a good read of https://codex.www.ads-software.com/Using_Permalinks and then reset your custom permalink structure back up using the advice it provides.

I just copied one of the samples there:
/%category%/%postname%/

but it still dosn’t work…?

Anybody?