Why are some drawings missing in my pdf-file?

[KROLIEN]

I'm having a problem saving a drawing in Illustrator as a PDF.
Suddenly pieces are missing from the drawing, such as some plants on the grass line and the tree on the far right.
I discussed the problem with my teacher yesterday, but she also doesn't know why.
Does any of you know why some parts of the PDF suddenly disappeared?

[Doug A Roberts]

Are they still in the AI file?

Are they on a particular layer?

Can you select one of the objects and show the appearance panel for it?

What PDF settings did you use to export?

[KROLIEN]

  

[KROLIEN]

Can you open the word-file? I've put some printscreens in it - layers & PDF-settings

[Doug A Roberts]

Please show the appearance panel for one of the objects.

[KROLIEN]

[KROLIEN]

[KROLIEN]

[KROLIEN]

[Doug A Roberts]

I do not know the Dutch translation, but this is the appearance panel:

[KROLIEN]

[KROLIEN]

[Monika Gause]

If you need to translate some Illustrator terminology: https://www.vektorgarten.de/illustrator-polyglott.html

[Kurt Gold]

Can you perhaps share the original Illustrator file (.ai) and the PDF file?

[KROLIEN]

Hi Kurt

I can't drop the ai.-file here. I just got this error: 

• The attachment's pe affiche - karolien moens.ai content type (application/postscript) does not match its file extension and has been removed.

[Larry G. Schneider]

You will need to use a file sharing site like Dropbox, Creative Cloud or Google and share the link here.