Thank you Mick!
philundrob.de is the domain I want to use for the forum.
Here is the domain mapping:
Regarding content being different:
On
http://philundrob.bplaced.net/phpBB3/ this is the last topic from Jun 4:
On this domain we have 3 users (this guy I already had deleted):
On this domain we have the following favicon (the new one):
On this domain we have all extensions available that I uploaded:
On
philundrob.de the last topic is from Jun 11:
On this domain we have 2 users (this is correct):
On this domain we have this favicon (the old one, so incorrect):
On this domain we don't have all extensions available that I uploaded:
What could be causing this difference?