Sorry about the registration problems, we have recently upgraded our main server and so emails are a bit slow being sent, we apologise for this.
Were you kicked/banned by an admin? OR was it votekick/voteban? If it was by an admin, can you find out who it was and we will try to figure out why they did it (they usually have a good reason)
As for using different "gun models" these are called "skins". Some people use them, however they are illegal in the league we play in (enemydown) and hence are not used that often.
for skin information and tutorials, and im sure members can help you out here aswelll.
Yes the d2 server is back up, but will be laggy for the next day or so while our server rebuilds its raid array, should be back running soon.
So stick around, and any more questions let us know
See you on the servers