Whenever there are installation problems, especially with a new license, you are best off if you talk to whoever sold you the license(s). They are dealing with setting up licenses every day and likely know how to deal with problems.
For my dealings with licenses, I've never use a sales order number during the installation process. The method I use is as follows:
(1) Log in to your PTC eSupport account. You can set up one of these accounts if you don't have one. It's been a long long time, but I think that sales order number will allow you to do this.
(2) Go into the license management area and request a license file for your sales order number or whatever. The website has been updated recently so I'm not sure the exact means of getting to this stuff, but you can find it.
(3) Use this file when installing the license manager.
When you install the license management via the PTC FlexLM installation tools, it modifies the license file you downloaded, filling in the critical information for your setup (server hostname, path to server software, etc.)
