Ich erhalte neu ein Dialogfeld zum Bearbeiten der pdf. Vorher war besser

Hi ​@nice_friendship9653, 

Thanks for reaching out. 
With the limited information provided, I am assuming you've been switched to the new Acrobat experience, which has a simplified interface with a more limited crop tool. Here's how to get back to the classic interface with the full crop dialog:

Windows: Click the hamburger menu (≡) in the upper left corner → select Disable new Acrobat → restart when prompted.

Mac: Go to View in the top menu → select Disable new Acrobat → restart when prompted.

Once back on the classic interface, you'll have access to the full Set Page Boxes dialog with precise numeric control over crop margins, page range, and all page box types.

Let us know how it went. 

~Tariq