1. Install SEO PowerSuite 2013 and after installation do not run any program yet.
2. Goto C:\Windows\System32\drivers\etc
3. Open the file "hosts" in notepad and add this in the end:
127.0.0.1 link-assistant.com
127.0.0.1 www.link-assistant.com
and save it OR just replace the original "hosts" file with the one provided in the keygen folder.
4. Now just start the keygen and generate your serial for your desired product and apply.
NOTE: To update, just add # before 127.0.0.1. For example:
#127.0.0.1 link-assistant.com
#127.0.0.1 www.link-assistant.com
Once updates are done, remove the #.
If after registering your license shows Professional, just generate another key and update your license
(might take a few tries) and it will become Enterprise.