Welcome to the forum......
I see several things that should be fixed.
You have a standard module named "Date". "Date" is a reserved work and shouldn't be used as object names.
You also have a field name of "Nummer" (Number). "Number" is also a reserved word.
Here is a list of reserved words that shouldn't be used as object names.
You have a couple of Macros where the name begins with a number. Never begin names with a number.
The top two lines in any module should be
Code:
Option Compare Database 'Use database order for string comparisons
Option Explicit
Good luck with your project.....