Final URL, how important

I like, what I see about your software.
 
At the moment, we want to move from a different, existing free forum to yours. We are not shure, what will be our final url, when we use the forum. Maybe, we want to prepare things with a total different url than we later use in live-usage.
 
So, how important is the url for your licence ? If I buy the software now and register for the temporary url, can I later change it ?
 
Or does the software not check if the used url is the same as the registered url ?
 
For a better understanding:
 
Our actual forum is: http://forum.seti-nordlichter.de/
 
Our test forum will be: http://nordlichterforum.kor.b-s-m.de/
 
Our final url will be: ??????
 
Peter (Yeti)

don't worry about the URL thing for now. It is for reference only - just make sure you update it here when you have a final one. Forum URL is also used for support purposes. Sometimes I will logon to users' forums to see the problems users encountered in the software. Sometimes it is easier to try reproducing the problem myself than to guess what the reported error is about.