Welcome to the forum, mathias!
I don't think your dynamic content is the problem, since phpdig will index those kind of pages. I may be off base, but it's possible the indexing process just got hung up for some reason. That has happened to me before. Try clearing your database tables and try again. Make sure the search depth is set to more than just zero, too. Let us know if that helped at all.
BTW, your English is fine!