help with VPN diagnostic

[gfheiche]

I created a windows VPN on a windows 8.1 laptop, but cannot connect to it. Here is the Remote Access Diagnostic Report:
https://productforums.google.com/fo...iscellaneous-drive-issues/windows/XuhESN21Nno

Unfortunately, I do not know how to read it.
What went wrong?
How can make the VPN work?
Thanks in advance